actually, since there is a short delay between article loading and the nag screen, you can even click "reader mode" just after (re-)loading the page and get it to work
not as elegant as your solution, sure, but it works in a pinch (also probably easier to do on mobile)
All the time on mobile I'm reloading and trying to hit reader at the right time.
Using Reader Mode (at least on Firefox) and reloading will also bypass the paywall and you also get the added benefit of an easier to read article.