I remember the exact point where I gave up on Red vs. Blue. Season 10, episode 10. I gave up, I made a oneshot about it, people screamed "don't let the door hit you on the way out." What gripes me is that so many people love the Freelancer stuff, and I never got why.
I'm not opposed to RvB having some more story depth than what it started out in. That's why my favourite season is Season 6, because it combined plot and comedy together, and did it excellently. I didn't much care for Season 7/8, but Season 9/10 are when things went off the rails for me. Want to know why?
https://www.youtube.com/watch?v=Ke9wtbzGjCI
That's why.
People say the fight scene is awesome. I say it's stupid. Why? Well, for starters, it's out of place from the original series, because Tex may be the best of the Reds and Blues, but that's an insanely low bar to jump over. But this? This is over 7 minutes of action, and nothing but action. There's no plot, no character development, the show literally stops just to have an action scene. That was in season 8, but now factor this approach to storytelling in seasons 9/10. A season where every female character is uber and every male character useless,* where entire episodes are just over the top action, where the plot goes completely bonkers. I know people love Monto Oum, and his death was a tragedy, but while I assume his style worked for RWBY (never saw it, but people love it), it just doesn't fit Red vs. Blue. And while I understand the series toned it down post-10, I've never bothered to find out.
*To clarify, girls being better than boys isn't an issue. Tex was the most competent character in the first five seasons. The difference there is that Tex being better was played for laughs - guys underestimate the girl, girl kicks their arses, cue laughs, and the unspoken rule that even Tex herself isn't that competent, she's just more competent than the people around her. Season 9/10 takes this idea, but extends it to a team of girls being better than guys, and not having any humour to go with it. A team of competent men always surpassing a team of competent women would be just as grating in the same context.