Re: Who do I trust? Let me explain.
You are absolutely right that if I could harden my PC and phone beyond my browser (and I do).
But the article and comments were about Kaspersky antivirus and antivirus software in general.
In the context of Kaspersky, I don't trust any of the comments cited in the article. All were made by groups with their own agendas.
In the context of antivirus in general, as others have pointed out, they are reactive against known threats and not proactive against unknown threats.
While I use them, I don't rely on them to keep me safe and no one should. They may stop some malware but they basically serve to warn me after something has gotten through. In this they are like identity theft websites which don't stop my identity from leaking but tell me when it has.
As far as domain blocking, ElReg's article today on the Ukraine CERT lists the advisories on particular domains (and I sincerely wish someone with more knowledge than me would create a Ukraine Invasion filter for uBlock)
Everyone's personal kit should have defense in depth, company kit even more so.