Josh Sawyer doesn't work for Larian, never has. He works for Obsidian. And if you've played either of Larian's previous games, you'll recognise that high level magic was very much possible, essential even.
You can't compare BG3 with WotR. It goes to level 20 with 10 mythic levels on top. BG will be at most 10 or 11. Some of the mythic abilities are over the top. That's why they need to create a game built especially around them, with mythic demons and creatures. Can you imagine any of these spells against a bunch of cultists?
I mentioned Sawyer because I din't liked magic in any game that he worked. Firearms in other hands, FNV is amazing. As for comparing BG3 with PF:WoTR, I din't compared, only said that Larian is wrong about what they said about high level magic on D&D. And they said many times that they can't implement spells like Wish(which BG2 implemented in as a "list").
As for larian having "high level magic", I disagree. None of their spells are like stop time, wish, polar midnight, wail of the banshee and so on. Necromancers can only have a single minion and honestly, everything cool has long cooldowns. I honestly hate cooldowns...
