How can you rant on something for hours and hate it so vehemently when you, by your own recent admission actually know next to nothing about it, don't understand it, and have never had any actual contact with it at an experiential level?
You actually can't.
I'd invite you to try, in an articulate, reasoned and sensible fashion, giving back up to what you have to say and explanations for your impressions. Please - it might help some of us understand your apparent loathing of this thing that you don't really know anything about, by your own admission.
As much as I very much disagree with his position, his perspective has some merit as someone who isn't familiar with 5e. It gives us the impressions of someone looking at the systems from afar and mostly being familiar with videogames, and thus the conclusions they give based on said lack of experience with TT 5e. Someone coming into BG3 may make the same conclusions based on just reading Sorcerer's abilities, therefore it makes sense that it should be made clear through the gameplay via aesthetics and metamagic that sorcerers are NOT wizards nor warlocks.
Overall though, I still vehemently believe adapting the 5e ruleset would translate best to a videogame, and that Metamagic, once someone gives it a chance, acts as a good introduction to the variety of spellcasting while also allowing someone to not care so much about spell slots through easy recharge (with only warlock competing for ease of regaining spell slots in TT and would be better if Short Resting limit was based on Level/Hit Die but I digress). Metamagic is so good, that the feat that allows others to get a much more limited kind is super amazing on any spellcaster.l, at least in theory.