What are your sources here? Aside from Proton VPN being no-logs already being proved in court, Proton has third-party audits to back up their no logs claims: https://protonvpn.com/blog/no-logs-audit
While theoretically there may be more secure approaches you may also be introducing new dangers as well. Eg; paying for a VPS with an anonymous coin doesn't mean your VPS provider can't deanonymize you or comply with a warrant. You need to make sure every single link in the chain is foolproof. That's way more error prone.
IMO a proven legal track record is in a way more valuable than unproven theoretical flaws (if you can even call them that).