There were people making threads against retainers, yes, especially people denouncing the silly amounts of items being pushed into regular inventories instead of key items as a way to promote their service. The justification for them was "well XI had mules too so it's the same thing!" and "pfff they aren't P2W I'm sure winning a lot of Sweet Cream!".
Fantasia falls under the umbrella of basic MMO services alongside name changes and server transfers, so it was less of an issue and everyone got at least one free, though people did show some disappointment about them being that expensive and about them being removed from the one time item restore service, and that got defended too. Even back then people were calling the Mog Station a thinly veiled cash shop, I know because I was one of them, how quick some people forget.