I really haven't followed many shows over the recent years, but I used to never miss The Walking Dead. So I watched for about 9 1/2 to 10 seasons.
Still the best zombie makeup in any medium, but as far as moments of plot/story and characterization goes, the show really insults the audience.
Faking Glen's death was a cheap shot. They deliberately setup shots to have us believe he was eaten by zombies, then *episodes later* they reveal he hid under a dumpster while the other guy was eaten. I like cliffhangers, but it was a really slimy way of misleading the audience.
The showrunners, especially during Scott Gimple's run, had the attitude that "whatever we do, the fans are going to watch anyway" which leads to so many issues.
There's also too much filler.
While important scenes start pulling you into the story up towards a tense cliffhanger, TWD will say "Nevermind!" and keep you hanging as the next episode will be entirely moments of navel-gazing between two characters. Meanwhile you're still wondering about the other characters in a life/death struggle from last episode. There are moments when you do need character building, but so much of what Walking Dead does is padding.
Because I watched on AMC as the episodes aired, you have to sit through long sessions of commercials, and when you have scenes that are just padding, this means time wasted. Over the years, those commercial sessions seemed even longer.
It's a better show to binge on Netflix than to watch on AMC.
The longer it's become, more of the central cast has quit the show, including the lead Andrew Lincoln.
Having said that, I recently caught up with a over a years worth of TWD on Netflix that I missed, and it wasn't many episodes due to the pandemic.
The show is currently on it's last season, and I'll stream the rest when it's over, because I've come this far.