That is true. The only 100% fair way would be a database wipe, or free respec (and looms given back) every time they put new stats on an item.
Moving horse requirements fucked a lot of people over (even people without looms who were already finished retiring). The black armor was another big one, they should have given looms back to people who had loomed black armor.
I personally would prefer if they just left the game alone for the most part when it comes to item stats, skill requirements, etc. Or else implement changes in lump sums, and wipe the database (or give everyone free respecs) when they do it.
Focus on strategus, and on fixing things that are broken. Or implementing new things to c-rpg. The classes and equipment are all pretty well balanced (balance, i.e. everything has strengths and weaknesses).