Earlier quoted context omitted.
But for $10k a month cloudflare is ok with that? Either it's acceptable or it's not, there is no way that this looks good for cloudflare either way.
It's not just 10k a month. it's 10k a month for the plan that allows you to BYOIP (Bring your own IP addresses). That was cloudflare's issue. Their business was causing IP reputation damage and all plans but the enterprise BYOIP plans share the same IP pool. Essentially it was "use your own IP pool and pay us for the cost of maintaining that pool for you or GTFO". This wasn't just a normal sales rep hitting them up.…
They also were clearly lying in those email messages: The second email says that domain rotation is strictly forbidden, but a few days later in the third email they're explicitly selling features for rotating domains more effectively.
And sorry, but a company selling "we'll override the Trust and Safety team if you pay us $$$" is absolutely unacceptable. There are only two options, both bad. Either they're not running a real TnS operation, but just pretend-staff one in order to run these kinds of shakedown operations. Or they're running a real TnS team that found a real problem but are letting sales people override the TnS team's honest judgement.