I would argue it’s actually easier to serve content to logged out users as you can cache the whole response and serve it at the edge. Then it “just” becomes a cache expiration problem.
>>zeitg3+(OP)
Correct, we push static assets to the edge. However not all SASS products are the same, there is a spectrum of features that can be pushed to the edge and some cannot. The engineering comes from cost, usability, reliability, etc...