I find criticism of segwit that i've heard from several places very valid and it is a vector of attack if the segwit addresses can be attacked by colluding miners that decide to do so (I couldn't explain the technical details, but this is the summary, correct me im wrong).

What it's not clear to me at all is if this is a concert that is practically possible or just theory. And I also don't see where satoshi said "no segwit". I've read satoshi quotes saying how he designed bitcoin with support of several format addresses on mind or something along the lines.