Safari 13 Extensions

Hello, I have a question for APPLE,

Can you tell me why you disabled all extensions except extensions that you 'APPROVED'

You also said that extensions which isn't from appstore is killing safari and it slowing down.

I paid for darkmode extension that you "APPROVE" and it is worst extension ever, I lose my money for some ****.
Extension on youtube, google etc. taking 5-6 sec more for response any click, and showing negative(invert) colors, also some times safari get error "safari cant open page" chance to get this error is 2/10, google chrome with 23452453 extensions opening it 3x faster...