Not yet, at least
"Cloudflare's business has never been about targeted advertising or selling user data," said CEO Matthew Prince
That would fall in the category famous last words not yet. The problem is never with current management. It is always a problem with who will follow. Either an internal policy change or a big investor, who wants to squeeze the last cent out of it too. But then it is too late. Your infrastructure has been committed and changing it is hard and expensive.
The lesson, that we all should have learned by now, is that a promise is just a promise. It does not say anywhere, how long that promise may last or is applicable. So, yes, good promise but use caution. Do not make yourself (too) dependent.