Yeah, but like... complain about the actual heinous stuff when it comes? Nothing's even been announced yet, so any argument about what's to come is pointless because we literally don't know what's to come. Maybe they add those Redbull costumes from a while back for free while letting you wear them AND earn fight money doing it. There's no reason to believe they'd do that, but both of us are working on no info here.
Complaining when it's too late doesn't help anyone, again horse armor is a prime example. You can find a ton of people who regret buying it cause they realize how it shaped the microtransaction future even though they thought it was harmless in the beginning.
How people react to this will directly affect SF6. If people are okay with this small change you better bet SF6 will push it even further.