> I open websites in a new browser instance and then close the instance. So no cookies stick around. Because I have set Firefox to delete cookies when closed.
You go through more effort, time and work in just this one step every day than "all this work the GDPR causes"
"I fixed problem for myself but I'd like for it to not be a problem at all for other people that are poorer or less technical than me" is perfectly reasonable stance to take.
GDPR doesn't cause this work. The industry you're busy defending is causing this work. It's almost trivially easy for most companies to comply with GDPR. Instead they want to sell your data to hundreds of trackers.
You go through more effort, time and work in just this one step every day than "all this work the GDPR causes"