I don't have a solution, but on this topic I let Fable write a browser extension I called "Nee, krijg de tering". It's "No, fuck off" in English, but the Dutch feels more visceral for me. It's really rough, but it tries to find these "Maybe later", "No, thank you" etc. buttons and replace the No button.. I guess it's kind of self-explanatory. Does not really do anything, but it is cathartic (and also messes with a lot of UIs to the point where unfortunately the blocklist of domains this should not be used on is growing a lot :'( ).
I feel this pattern is really abusive. Like I am offering to slap you in the face, giving you two answer options: Yes and "Maybe later/no, thank you". As though you have any obligation to be forced to answer this question again at some late time, or to be very polite while you refuse to be slapped in the face. The correct answer is obviously "No, fuck off".
(lit. "No, get the tuberculosis".)
Sensible. Add in a 'Nee, flikker op met je kutcookies' button for cookie consent banners, and you're golden.
This 'maybe later' dark pattern seems to have gained so much traction that UX folk just use it because everyone uses it. There is probably some handwavy reason for it that amounts to not wanting to give the user the feeling they are doing something definitive, but it just ends up being another grain of sand on the micro-annoyance pile of today's tech.