Did you ever write one that endures?
From first-hand experience, I spent so much time working on uBO in the last 2.5 years that I would appreciate the task to not be trivialised with such sentence as "anyone can write an ad blocker". Such trivialisation prevent those who don't understand software development from valuing all the work done, up to being told "F you!" when refusing to spend more time on the project than I already do.
Anyway, thank you for your work. uBlock Origin is literally the first extension I install whenever I use a new browser/computer. It's lightweight yet powerful and your default lists remove a lot of the work involved in deciding what nonsense to block. Whenever I don't have it installed, I'm amazed at how user-hostile the web has become. We may have gotten rid of pop-ups but advertisers have reached new heights of annoyance with popovers and ads that push down the content you're currently reading. It's absurd that people actually endure 30 second video ads to watch a 1 minute YouTube clip.