Oh, without a doubt. One of my pet peeves is when others make assumptions based on little to no factual evidence backing up their claim.
XP boosts are one thing. If I'm making progress at a decent pace and I'm not completely overpowered by the enemies that I'm clearly supposed to be facing given my progress, couldn't care less. The game was clearly balanced without the need for the boosts first and they were added later because some like to buy a game, hit max level and just run around, mowing everything down ion their path. If I ever feel like I need[/i[ a boost, then I take that as a sure sign that the progression system was balanced around the boosts.
Dyes for clothes? If I like the color I'll buy it. Zero issue paying for extra content outside of the base purchase, as long as it's reasonably priced. There's an argument for whether or not a palette swap is worth the cost outside of the game, as they used to be unlockable in-game 20 years ago. Super Mario 64 would also cost ~$130 USD if it were adjusted for inflation to match the value of today's dollar.
Loot maps, are something different. They've been in the AC games since at least 2 (first one I actually played, kinda put off by the opening hours of 1). If those are only obtainable through mtx I'd be kinda miffed because I like to go around and grab what I can find and use them for my end game clean up when I feel like I've exhausted all of the places to search. I mean, I can find a map online a week or two after launch, but it is way more convenient to do it form the in-game map screen.
Real money loot boxes or currency conversion systems for loot boxes is where things start to get predatory, but I'll refrain from pushing this thread there until we know for a fact that these things are in this game.