Thing is, Justinian was seen for years as the last noble gasp of Rome, and even when later historians turned away from this interpretation, it still allowed for a balanced look at the man. Aside from Suleiman, the Ottoman Sultans have never generated this sort of press--indeed, good historical works on the Empire remain rather rare. (I'm serious. Go over to wikipedia, and count how often you stumble on words to the effect of 'large portions of this article taken from 1911 Encyclopedia Britannica' in their Ottoman articles. Which explains the incredible amount of dismissive Orientalism in some of them.)
That most writing on the Ottomans in the West was written by the orientalist school is a far more legitimate - and serious - problem. That wikipedia is particularly abysmal is not news.
As for some examples for Selim's not sucking quite so much--the restoration of the Hagia Sophia, undertaken at his orders against religious opposition. The Selimye Mosque, generally considered one of the triumphs of Ottoman architecture. The rebuilding of the entire Ottoman navy six months after Lepanto, complete with galleases, a significant part of the whole 'winning the Cypriot War' matter. (And you may call it snark Elfwine, but I have seen too many articles on the importance of the Battle of Lepanto which ignore the fact that the Holy League broke up after it, and the war was an Ottoman victory. And as for the popular opinion that this marks the turning point for the Ottomans--the more I read about it, the more I have to say, no, I don't buy it.)
And maybe it's me, but I see nothing contradictory about Selim being a useless sultan and building magnificent mosques/rebuilding the Hagia Sophia (obviously the naval reconstruction indicates someone is doing their job, either him or a vizier - which would have to be his appointee, and "picking good lieutenants" is generally listed as a good quality in when rating the ability of kings).
I do call it snark. It may be true that there are too many articles saying that, and popular opinion in Western European (and American when Americans write about European history) circles tends to suck for anything east of Germany.
As for Lepanto's status as a turning point, I think this might be fair - wikipedia or no:
The strategic situation after Lepanto was graphically summed up later by the Ottoman Grand Vizier to the Venetian
bailo: "The Christians have singed my beard [meaning the fleet], but I have lopped off an arm. My beard will grow back. The arm [meaning Cyprus], will not".
[52] Despite the Grand Vizier's bold statement, however, the damage suffered by the Ottoman fleet was crippling—not so much in the number of ships lost, but in the almost total loss of the fleet's experienced officers, sailors, technicians and marines. Well aware of how hard it would be to replace such men, in the next year the Venetians and the Spanish executed those experts they had taken captive.
[53] In addition, despite the limited strategic impact of the allied victory, an Ottoman victory at Lepanto would had far more important repercussions: it would have meant the effective disappearance of the Christian naval cadres and allowed the Ottoman fleet to roam the Mediterranean at will, with dire consequences for Malta, Crete and possibly even the Balearics or Venice itself.[54] As it was, along with the Ottoman failure at Malta six years earlier, Lepanto confirmed the
de facto division of the Mediterranean, with the eastern half under firm Ottoman control and the western under the Habsburgs and their Italian allies.
[55]
Bolding the part that I think bears discussion.
Perhaps "turning point' is the wrong word, but for the Ottomans to suffer such a blow of trained and experienced personal is certainly not merely a singed beard.
IMSIO (In My Somewhat Informed Opinion), going with that - Lepanto is more like Gettysburg (significant for how a reversal of fortune would have mattered) than Vicksburg (significant for what was accomplished), if ACW famous battles can be used as comparison.
But I think that the vizier was able to make such a statement - no matter how much one counts the loss of trained men for - says a lot about it being a turning point for the Ottoman Empire's fortunes in general, as opposed to simply a check.
But this might need to be taken to PMs, as we could have a whole thread just on how much actually changed after Lepanto from the pre-battle situation (both beneficial and detriminetal).
Sufficient to say, I think we both would argue, Selim did not doom the Ottoman state - the Ottoman state failed to reach the present for reasons irrelevant to which son succeeds Suleiman.
You need a POD addressing economics, not wars, if you want to change things here.