I'm not surprised the show lasted so well.
I met Billy Zabka at a London Comic Con around the time of season 2 filming (just before Covid) and he was extremely busy, so I knew the show was already a hit.
I got Billy to sign my Equaliser dvd booklet (he played Edward Woodward 's son as a recurring character [should add I mean the original show, not the much inferior revival], and managed a selfie which I think was lost with a broken phone.
Billy seemed a really nice guy, apologised for not having more time as he was so busy, I remember he told me that Edward Woodward was the best actor he ever worked with.
Unfortunately, Cobra Kai is Netflix and I refuse to pay subscriptions for TV (bad enough having to pay the compulsory subscription fee for BBC!), so I've only seen Season1 (which was on YouTube originally).