OK, if there is a monopolistic instance between you and the rest of the world that decides who can reach you
It's the site owners who are rolling out anti-abuse systems. They picked a vendor to meet their needs. I don't think Cloudflare put a gun to their heads to force them to onboard their services. Do you?
Potential threads from this are (but not limited to):
You mean "hypothetical", not "potential".
Meaning, they are imaginary scenarios, and they represent the worst case you could think of.
You need to ask site owners what is their policy for these hypothetical scenarios you invented. On a technical side, removing anti-abuse protection is all it takes to fix it. This means that no action is required to address any of your hypothetical concerns.
If you need anyone to spell it out to you, you are mindlessly complaining about programming.dev adopting anti-abuse services from a service provider. When lightly pressed on the topic, you fail to present a single problem of doing that or even a single coherent argument against it.
In short, you failed to point out any problem involving or any reason to replace an anti-abuse system. And yet you argue the service should be replaced.
Is "why" such an insurmountable challenge?