It isn't a problem because the players that are doing that content are expected to be at those Artifact levels from the content they have been doing up until now. Why did you or anyone else ever think that Blizzard would not account for Artifact level in balance? Why is it bad that they take player balance into account? Its the same principle behind why a new raid has higher gear requirements then the previous, because player power has increased from doing the previous raid/content.
Plenty of players have asked for Alternate progression systems in WoW. A way to keep progressing your character in a level-based system once reaching the level cap. If you think anyone that wants that is not sane then it shows that the flaw is with you. Anyone who doesn't agree with your view is insane which again points out that the larger problem with Artifacts is around how the players treats and views them.