I don’t understand your second point. Which web app works offline?? (Unless they are deliberately made for that purpose. Hell, even most electron apps refuse to work without a connection) They regularly make new requests, there is literally no difference between SSR and CSR in this regard - it seems a bit that you are arguing with a straw men. Like, what does a webshop do which is written in react/whatever and you go to the next “page”, it hadn’t loaded yet?

Also, noone would even think that it is unreasonable for a WEBapp to phone home. What people have trouble with is tracking, that is orthogonal to the current topic and should be condemned.