Mods should work fine even if they say that. I believe if a mod hasnt been updated in the past 7 days it says out of date here on GPortal.
I would very strongly suggest though having a look at the Workshop page for each mod and reading the comments to see if anyone has reported the mod as broken and looking at when it was last updated. If the modder stuck to the guideline rules and created their own modfiles rather than overwriting basegame ones there should not be any issues, however I could be wrong if they havent been updated in over 6 months or a year.
AoC and Aquilonia Server Mod are always pretty much kept upto date by the authors.