Nobody cares about robots.txt, nor should they.
If this is your primary argument against being scraped (viz that your robots.txt said not to) then you’re naive and you’re doing it wrong.
If the internet is open, then data on it is going to be scraped lol. You can’t have it both ways.
It seems the Open Internet is idealistic.
If others respected robots.txt, we would not need solutions like what Cloudflare is presenting here. Since abuse is rampant, people are looking for mitigations and this CF offering is an interesting one to consider.