I was lucky enough that video about my extension blew up on tiktok (it wasn't even my video lol), which bring around 34k users. After that extension started slowly getting more traction from here and there (tech sites, personal newsletters, etc), but that didn't bring any substantial audience, to this day (1.5 years passed) tiktok was the biggest success and provided most of current audience, partially because I stopped actively working on the extension about year or so ago