early access is better than preorder bonuses or any kind of MTX.
so no, it's the exact opposite. it's basically the least anti consumer practice out of any of these modern money making schemes by publishers.
an early access edition on its own would have basically no negative impact on people not buying it. meanwhile MTX are often things taken away from the game in order to be sold separately at insane prices, and preorder bonuses do the same with the added shiftiness of exploiting FOMO because the preorder bonus goes away once it's out.
if a game only upcharges for a few days of early access, people waiting for the full release don't miss out on anything. in fact they might have a better experience as some patches might come out, improving the game.
now sadly, many games stack these things... so many games don't just have an early access version, but also bundle preorder bonuses with it, and might have MTX on top of that... but the early access part is not the issue there at all.