It's not a "free 2% cut in salaries", it apply to everything else. If there is 2% inflation the company will have to pay everything more and will have probably have to negotiate to get higher price from its client too or it will not get its 2% more revenue to compensate the increase of everything.

Additionally, usually workers have too take debts too buy their house. If there is a little inflation and the salaries are following inflation the debts becomes comparatively lower every year.

It's not just against workers. There are upsides and downsides for everybody.