Firefox for Android also supports uBlock Origin

..but, unfortunately doesn't have text-reflow.

Yandex Browser has text-reflow and used to support uBlock Origin [and other extensions] too. Now it no longer supports installing uBO. So Android currently has two browsers, each of which is half useful!

Note that Yandex is a Russian company and as such carries significant risks.

You are not wrong but the same can be said for PRC and USA companies. Mentioning that every time the products and services of these three countries are mentioned is not interesting.