Is there any reason now to use Cloudflare "full site caching" (cache everything via Page Rules) instead of this new Cloudflare Pages offering for static sites?

I know in the past, I at least would have my entire static site fully cached with Cloudflare using Page Rules.

What do I lose if I moved over to Cloudflare Pages? E.g. slower site performance, etc?

https://support.cloudflare.com/hc/en-us/articles/36002102371...

EDIT:

Follow-up question, what happens if I use Cloudflare Pages and then setup a Page Rule to "cache everything" from Pages?