Same way people trust Microsoft: "We already use them, and using them for this additional service exposes no data they wouldn't already have access to from all the other services we buy from them"

I trust Cloudflare more than I trust some other players in the arena. They have a decent track record of being neutral infrastructure provider. They seem technically strong, deploying Rust widely and caring about performance in a way that most firms do not. They're likely covertly funded by intelligence services so they don't have economic incentives to enshitify their offerings or deliberately screw me over.

Put it this way: I'd rather Cloudflare owns the Internet than Google, Meta, Amazon or Alibaba.