But then I found this add-on, "Request Control", and long story short, after setting up a "rule" to prevent that unwanted advertising page from appearing again, the buggy website now functions perfectly in spite of its own crappy/buggy programming. So thank you very much to Tumpio for a job very well done, your add-on does a truly terrific job, and I highly recommend it to anybody who is considering installing it.
A terrific replacement for Redirector; I can do everything that I did with Redirector and way more. This addon works seamlessly and is very quick, the redirects that I set up add zero noticeable delay, as if I were to follow the redirected url directly. I've yet to try the Blocking action, but it's very handy knowing that the option is there, and I'm quite fond that this addon works at as low of a level as it does, blocking these requests before they're ever sent out.
Very happy so far, but I had to deduct a star due to the url path not supporting regex. I can work around this with parameter expansion substring replacement, but it would be nice to be able to do my matching in the path field.
D'oh, accidentally put up an unhelpful review (The Mobile Add-ons site is still terrible). And I hadn't even noticed until I got the "Dev replied to the review" email. Now, with 100% more words.
Pretty cool, does what it says it does. My suggestions would be being able to export/import rules and settings (maybe even sync across devices, a la uBlock Origin; but regular export/import to a file works just dandy).
The missing star is because of missing functionality in Fennec;you can't access the rules ad such (but they do work, along with the cleaning option). Perhaps adding a button that lets us open up the extension's settings (again, like uBlock Origin) is in order?
....Unless it was never meant to pop up in the Android Addons page in the first place...