Yee had a racket going on. Ban as many guns in Kalifornia to create a black market demand to exploit. Make big bucks $$.
Same reason Don Davis of Don’s Guns in Indy was all over the national news supporting Clintons Assault Weapons ban.
He was the largest gun dealer in Indiana, with multiple stores in Indy.
My brother and I had an opportunity to have a lengthy discussion with him his about 10 years ago and we asked him about it.
He laughed and gladly admitted that it was because he had several shipping containers of the to-be-banned items and made a fortune off the sales before the ban went into effect.