Refusing the oauth2 authorize step always displays a warning screen instead of redirecting

There is nothing you can change your side to prevent this screen. So shrug

To my knowleges there is nothing “wrong” with this in regards to the oAuth specification.

Given they built this flow and this screen is a recent additional in general they are probably aware

If you think it’s a bug then you can file a bug report - Issues · twitchdev/issues · GitHub