"I suspected someone used a 0day on me" is not exactly inspiring confidence
"Initially I imagined I was targeted by a 0day or rootkit"
which actually does not make sense, because it implies he thinks those two things are fungible. He's obviously not a security expert, but he's also obviously not totally technically incompetent.
Also the people talking about “burning zero days”… every time you use an exploit (ignoring the exact meaning of 0 days) it doesn’t become burned by the first person. The hacker could use it on hundreds of people before it’s discovered and patched by whatever software it targets. That could take months.
Way to make yourself feel important. It's not that you made some terrible choices yourself, like using a known-insecure password manager SaaS, or putting real money into crypto. Nono, somebody pulled a 0day on me, what can ya do? Shrugs