One thing that I haven't seen discussed in the comments is the inherent vulnerability of S3 pricing. Like all things AWS, if something goes sideways, you are suddenly on the wrong side of a very large bill. For instance, someone can easily blow your egress charges through the roof by making a massive amount of requests for your assets hosted there.
While Cloudflare may reach out and say 'you should be on enterprise' when that happens on R2, the fact they also handle DDoS and similar attacks as part of their offering means the likelihood of success is much lower (as is the final bill).
While Cloudflare may reach out and say 'you should be on enterprise' when that happens on R2, the fact they also handle DDoS and similar attacks as part of their offering means the likelihood of success is much lower (as is the final bill).