As for the actual thread subject, Sonic being a joke, well I mean at times, yeah. Most of the time, honestly. But it wasn't always like that, however hindsight is indeed 20/20 and problems started to show right from the first Adventure game, and I'm not talking about glitches or camera control issues.
Sonic's a joke when it's a half-baked spin-off, a glitchy platformer or overly melodramatic (or cheesy) story. Sonic's a joke when he's re-designed for a Western audience despite the original Sonic already being designed for the Western audience. Sonic's a joke when the parent company forces a rushed release date at the expense of quality and polish.
Sonic is not a joke when it's doing what it does best, and that can be seen in games like Sonic 1, 2, CD, 3 & Knuckles, a few glimpses of the Adventure games, the Advance-Rush games and even somewhat in Unleashed, Colors and Generations: letting the player run, jump, dash and roll around as a blue hedgehog to explore vibrant and imaginative worlds, being exciting without taking itself too seriously, beating up a fat clownish bald guy who invents various technicolor animal-themed googly-eyed robots who also happen to have lethal death lasers and chainsaws attached to them, and just having a fun time blowing up said robots, collecting shiny rings and gems and rocketing through loops, ramps and half-pipes because who doesn't want to do that? Honestly? I personally can't think of anything more appealing than that.
I think the question "is Sonic a joke" is incorrect, and it should instead be "should Sonic be a joke," and if you ask me, Sonic shouldn't be a joke.
Sonic Boom Rise of Lyric was so awful I laughed. I don't wanna laugh anymore. Here's hoping the big 2017 game delivers.