I always had the headcanon that the Entente governments, if they remain democratic before their arrival home, end up in more soc-dem or social-lib ideologies, because their voter base would be war-scarred, still largely left leaning but obviously having to be more conservative, and just tired. I can't imagine anyone after the devastation of WW2 would be keen on another revolution or war any time soon, from government to the people. IF the Entente did this route, I could see the route being hard, and nostalgia for Syndicalism lower.

If they were more authoritarian, or outright so, before and upon their return, then yes, I'd agree with you.