The word "destroy" is questionable. These types of user-hostile patterns may in fact be needed to secure revenue or to exist at all. The standard internet user

The word "destroy" is questionable. These types of user-hostile patterns may in fact be needed to secure revenue or to exist at all. The standard internet user doesn't pay for anything and increasingly blocks ads. That's why these patterns exist. Surely it would feel uneasy to developers with a passion for UX, but there's nothing you can do about it. Go ahead and quit, it's not going to be very hard to find another developer willing to do it for 200K.