Well, sure.
But what happens if they both don't sign and don't fight ?
Then you have a rerun of 1923 which ended very badly for Germany.
Someone has to run Germany, and if France and the UK sign up to militarily occupy Germany, that someone is France and the UK.
Again, they don't have to occupy the whole of Germany, just take the bits specified in the treaty and maintain the blockade. Germany is on the brink of revolution anyway. Either the business and Army leaders play ball with the Entente or they wait to get put up against the wall by the Bolsheviks.
Again, look at the situation on the ground in Germany in late 1918 to early 1919. I wouldn't want to be in charge of that.
And yet in that exact time frame the British, French and Americans sent troops into the USSR to try and help overthrow the Bolsheviks, I don't think they will have any difficulty finding elements in Germany more afraid of the Reds than the Entente.
And to get anything out in the way of reparations, you need a working Germany - they spent everything they had on trying to win the war.
And yet they continued to squeeze reparations out of a decidedly non-functional Germany throughout the 1920's, in fact that was one of the issues that infuriated Germany during that decade, the demands that Germany make its reparations payments while blocking German goods from world markets.
I mean you *could* say 'The Ruhr is part of France'. It's on strike. And needs about twenty million gold francs to repair equipment. And another thirty million gold francs to buy raw materials. And their work force is on strike, and the Workers Committee is debating whether to call itself a Soviet.
And so what? The French were quite prepared to do that and why exactly do you think German workers are going to be prepared to starve for what amounts to little more than the 'glory of the fatherland'? Why are they less tired of the endless deprivations of the war than the British or French? Are they really going to be going on strike when the Entente are the only ones who can put food on the table for their families? As for the 'workers committee', well as pointed out already the Bolsheviks are the one group the Entente including the USA were willing to take military action against. The Entente won't go around having the leaders of the Soviet 'shot while escaping', but they won't be standing around while they declare a Ruhr Soviet either.
As far as debt to the USA goes, well that is actually a weapon in the hands of the British and French. In the simplest of terms they will make it clear that to pay their debts to the USA Germany must pay them their reparations or they will have to default. Germany actually used this tactic in reverse to get reparations curtailed. During the 20's they borrowed money from the USA, a large part of which they used to make reparation payments, then essentially turned around and claimed that if the USA wanted to see its money they needed to do something about reparations and it worked, the US banks applied pressure and the Americans brokered a deal to alleviate reparations. I see no reason why the far stronger British and French can't do the same in 1918-19.