Why does Text Reflow not work with Firefox?

Hi all. First time using PinePhone here.

One of the worst anti-features of the Google/Apple world for me was the abolition of Text Reflow.
Since this Firefox told me that it is in fact the “desktop version”, and in native Linux land we are not tied to Google WebView, I was expecting text reflow to work. But it doesn’t. Why??
AFAICT, the main purpose for Google to deliberately kill off Text Reflow from their browsers the entire Android platform, was to collect extra advertising/user-modelling data based on what parts of a page users are zooming and panning in on, not for any usability or accessibility reason.

How do I make it work like a desktop browser please?