Would Scotland be into the kilt culture they came into during Victorian times?
Probably not, although a shift from "The Erse Papists are after the cattle and the women!" to a rather twee but good-natured vision of misty Celtic twilight started even before Scott. Burns, an Ayrshireman, placed his heart in the Highlands, and there's Ossian.
Like I say, though, the high point of popular Lowland emnity - which was
not the low point for Gaels and Gaeldom - will probably never happen.
I recall that the most flamboyendly Highlander wannabe was a huge landowner who evicted tens of thousands so as use the land for sheepgrazing.
The inventor of biscuit-barrel Highlandism was Sir Walter Scott, who whatever you think of his politics or his prose was a harmless enough chap (just don't tell Mark Twain), an earnest believer in the virtues of a traditional (orderly, religious, and generally Tory) way of life as against the strains of industrialisation and modernity, and further went to the bother of actually learning Gaelic.
The Clearances were a long and varied phenomenon, but the move-it-or-lose-it mass-evictions in the northwest Highlands in the early 19th century were engineered by Edinburgh accountants.
If anything like that came along here, hopefully their would be some widespread revolt amongst the factory workers, miners, Highlanders, Caith, and others.
Why should there be? There wasn't OTL, not at the time of Clearance. The Highland land-battles came later and were met by the government with vague concessions.
And a very considerable portion of Highland emigration, whatever the pressures that made it attractive to start with,
was voluntary. And excepting those who were actually Highland Gaels, what does it matter to Glaswegian factory-hands, or to the miners of Lothian?
Further, what's a "Caith"? A person from Caithness?
Areas might even try to join Ireland.
Whit?