No computer is truly safe from hacking due to software complexity, constant discovery of new vulnerabilities (bugs) and the human element (social engineering)
These days most companies are a target due to ransomware financial gains
If you are talking about what kind of data SLR keep, that's fair
When using porn websites (or any, really) you should consider using multiple emails or something like email alias/relay - which gives you a randomly generated email address that forwards your emails to your main inbox
Something like iCloud private relay, Firefox relay, Proton aliases https://proton.me/pass/aliases