I think you mean: If your entire customer-facing service is built on Cloudflare and the rest doesn't matter, etc. But I suspect that the rest matters. For exam

I think you mean: If your entire customer-facing service is built on Cloudflare and the rest doesn't matter, etc. But I suspect that the rest matters. For example, will you benefit from having your domain working when the admin team works on an outage? Yes/maybe/no? My answer is the middle one.