Maybe, I'll ponder it, maybe experiment a bit. But I have not achieved my goals yet, so it's too early to end it out right
I personally blocked literally all users from lemmy.ml 9 months ago - going so far as to move to PieFed where I could actually accomplish that aim - and I have enjoyed the Threadiverse much better since then! :-) We'll be fine then, methinks.
Just blocking .ml on an individual basis, while good for individuals to not see their crap, doesn't really fix the problem. The continued spread of misinformation and attempts to enforce the narrative as "truth" by making it appear as though there's no dissent about it (on .ml).
This is harming the overall growth of the Threadiverse IMHO. New users come, aren't aware they need to block .ml and miss the threads talking about it, and then get scared off when inevitably they start going on one of their rants about how NK isn't a dictatorship. Or maybe they never come back after commenting in support of Ukraine or something (Which they continue to push the Russia narrative is being entirely run by "Nazis" and Russia was justified to invade), get dunked on and then catch a ban for it.
Russia has been talked about for having mis/disinformation campaigns for the purpose of furthering their goals for at least a decade now. We should not be a party to allowing that to spread. And I see a crap ton of various untrustworthy news sites they pass off as highly credible and will viciously defend it and censor anyone who calls it out.