[pengaru]

> And they increasingly can't be dismissed, so if I want to view that URL, I need to mail it to myself and open it on a desktop.

Usually I can work around this by toggling "desktop mode" in firefox on android...

[gausswho]

Also on Android you can use Firefox Nightly with uBlock Origin. Go to settings and enable all the Social and Annoyances lists. This should suppress many prompts to download an app.