How do you prove you are not collecting data?
If your use default configs of Apache, or Nginx, your access.log is probably infringing GDPR. It’s impossible to prove you’re not collecting this without an extensive audit.
This is your interpretation. Many prominent lawyers disagree.
In any case, convincing a regulator that you are not, in fact, collecting data could be harrowing, distracting and expensive. The risk of incurring those costs probably isn’t a smart one to take for a hacker or very early-stage start-up.
I'd like to point out that it's in the interest of a proeminent lawyer to tell you that their services are needed...
Even if we assume a completely bizarre and pathologically incompetent regulator that somehow ends up zeroing in on some tiny website which exhibits no evidence of violation, the hobbyist might have to... delete their website?
Have you ever responded to a regulatory enquiry?
If you're not collecting data, then all of this is irrelevant. You just say "I'm not collecting data". There's no nuance here.