Cloudflare is a provider that you can choose to have as a part of your own infrastructure.
Indeed.
man in the middle implies “attack”
That can be a convenient shorthand if the parties in a discussion agree to use it as such in context. For example, in a taxonomy of cryptographic attacks, it would make sense. It is not the general meaning, though, at least not a universally accepted one. Similarly, “counter” does not imply “counter attack”, unless we happen to be discussing attack strategy.
More to the point, nothing that I wrote misrepresents the situation as was claimed by that other person. If I had meant attack, I would have said attack. Rather, they made a leap of logic because I (like most of my colleagues) don’t happen to follow a convention that they like, and picked a fight over it. No thanks.
Maybe one of these?
https://system76.com/desktops/
https://www.dell.com/en-us/search/linux
https://www.tuxedocomputers.com/