There will be lots of people who are frustrated by this. They may say that Cloudflare shouldn't remove content unless they are legally required. Or that a CDN like Cloudflare is a platform layer, deep in the stack, and that it shouldn't be making decisions based on content. That they are a essentially a utility, and that they should provide the the same service to everyone.
But at the end of the day, companies are run by people. And those people should consider the positive and negative concequences of the services they provide. It is the moral thing to do. It is the right thing to do. It is the courageous thing to do.
That doesn't mean they must block every potentially bad actor. And they don't need to block based explicitly on content. Here, the line was drawn at "platforms that have demonstrated they directly inspire tragic events and are lawless by design." But when situations arise that cause decision makers at an organization to re-consider providing their services to their customers, they should take that opportunity to re-evaluate. They should ask, "Do we want to be hosting this?"
In this case, they said "No."
Maybe some other customers will leave, afraid of being kicked off next. They should take that into account. If you think your service is sufficiently like 8Chan, you should probably leave Cloudflare. Or if you think Cloudflare's decision was arbitrary and that worries you, you should leave.
But maybe others will be happy that their CDN doesn't need to be associated with hosting 8Chan's content. I know I feel that way.
Maybe the goodwill you receive will lead to more financial success. But you'll probably never know. In all likelihood, so long as your customers aren't leaving in droves after you kick someone off your platform, you'll never know if the decision was the right financial decision.
You'll probably never know if it was a net positive or negative on your balance sheet. But you might sleep better at night. And maybe sites that enable the propagate hate will find it a little bit harder to survive. And I think that's great.