Simon and YC/HN has published/boosted these gradual improvements and evaluations for quite some time now.
There is a https://simonwillison.net/robots.txt but it allows pretty much everything, AI-wise.
For example, I used to get verbatim quotes and answers from copyrighted works when I used GPT-3.5. That's what clued me in to the copyright problem. Whereas, the smallest models often produced nonsense about the same topics. Because small models often produce nonsense.
You might need to do a new test each time to avoid your old ones being scraped into the training sets. Maybe a new one for each model produced after your last one. Totally unrelated to the last one, too.
The training no doubt contributed to their ability to (very) loosely approximate an SVG of pelican on a bicycle, though.
Frankly I'm impressed