The criticism of Cloudflare here is reasonable, I think. I really like the CF building blocks - they're neat and conceptually useful and quite unusual. I think they could have a better developer experience though (though it probably is better than when I last tried it), and I also think they could have a little more confidence in their overall platform's usefulness and open up more of their model as open source. For example, I'd love to run my CF workers in CI locally without creating infrastructure (again, this may have changed since I last tried it).