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I'm using adblock plus with easylist and fanboys list, and "allow non-obtrusive advertising" off. Works for me

Works for me. You could try a different adblocker, but it should work. Did you try turning it off and on again? ;)

I don't even find the option anymore to not block the pre-rolls, which was an experimental option for some time. Seems to be on by default now (or even integrated into the filter lists?)

Try a different adblocker that isn't being paid by Google to whitelist their ads. Try different blocklists, and for the real scummy domains I use a host redirect through my firewall.