Setting aside the usual arguments on the anti- and pro-AI art debate and the nature of creativity itself, perhaps the negative reaction that the Redditor encountered is part of a sea change in opinion among many people that think corporate AI platforms are exploitive and extractive in nature because their datasets rely on copyrighted material without the original artists’ permission. And that’s without getting into AI’s negative drag on the environment.
Charging for those copies in a competing market is definitely against current copyright law, and many the owners of the models are charging for access while some users are selling the results. Obviously this is new territory legally, but an argument can be made that these do not fall under fair use.
Where do their desires differ?