Take me, for an example. Google Greg Maxwell. You'll get a smear piece written by the associates of the fraudster that claims to invented bitcoin title "Crypto Crime Cartel: Greg Maxwell" several pages ahead of my own webpage (https://nt4tn.net/) which shows up only on the sixth page where essentially no one will see it. (hey, at least the smear piece not #1 anymore-- It was for a long time.)
(You could add 'bitcoin' to the search to get rid of most of the people who aren't me-- the "crime cartel" article is result #2 then, and my page is at the bottom of page 4-- again where few people are ever likely to see it-- after several other smear pages.)
So I think the threat of negative material is mostly orthogonal. You're probably better off invisible, you're screwed either way if someone well funded wants to trash your name.
I don't think the cost/benefit is likely to pan out. Of course, on the same basis, blocking yourself out of google results is also mostly irrelevant for the purpose of standing up against DRMing the web.