I agree that PP should be 4 so they don't need to get a negative quality if they want 6 at chargen.
However, it was the SR community that lobbied for the nerfing, Catalyst originally had it at 2 Karma.
And MysAds can always choose to take a PP upon initiating instead of a metamagic.
Those that do get all of them at generation can do that as well, so they're still ahead.
And, it wasn't the entire community. It was a very vocal segment of forum population, and forum-goers (at least beyond the occasional browsing without signing up and posting) are actually a minority among the player base.
I'm not sure any other archetype sees as much vocal hatred as the MysAd. I remember the threads from the start of 5th Edition when the typo had it at 2 karma per power point. I proposed the cost at 4 karma per point, along with others, and there were a lot of posts that absolutely refused to accept that, with out anything of substance to back it up. Then again, back in 4th Edition when they were errata'd into being almost useless, there were still people who thought they were overpowered. /shrug
Since then I've slightly evolved my stance on them: If Catalyst refuses to completely rework them, then I still think it should be 4 karma per power point (not going to happen, I know). However, I think that aspected mages and MysAds should be combined together; the new MysAd would have power points equal to their magic score, and select either the Sorcery, Enchanting,
or Conjuring Skill Group. Of course that would require that Catalyst would be willing to go back and make massive changes to those things that need it, which in the last word we heard (in the technomancer supplement thread) wasn't going to happen either.