I dunno if that angry animator is legit, but it also brings what might be the biggest issue RWBY's animation has.
Sure, animators were complaining about being underpaid, and working extra hours. And we can see how the fights have gotten worse. But
those are just symptoms of the real issue: That is, the writers aren't being realistic with the scope of the series.
They just don't have the budget for what they are trying to do, but they won't admit it. And instead of adapting they just make the product worse. So you get some "episodes" that are basically glorified slideshows with Qrow narrating and scenes that are just semi-static drawings.
I mean your average CGI series has around 1 million dollars of budget per episode. Not season. Episode. Like say Clone Wars the animated series:
That doesn't mean RWBY isn't workable, but for its quality sake, it should have been much more contained, something their small team of artists and animators could handle. The smart thing to do would've been to contain the plot as much as possible around Beacon and Vale.
And I suspect that was Monty's intent, considering how much time he took to develop Beacon academy, I think he wanted something like more like Hogwarts and less like Last Airbender's world tour.
Don't get me wrong, If they had that kind of budget I would agree exploring Remnant would be the best, after all, It worked for the Last Airbender, and Clone Wars can also afford new locations every episode. But that's not the case. The last thing they should be doing is a world tour which just increases the number of places and things 3d artist have to create and then animate in.
And worse, they keep adding way too many characters every season. They simply don't have the screen time, and resources to develop all. And they expect their 3d artists and animators to somehow catch up to literal multi-million dollar productions while also animating a chibi spinoff and a mecha series.
It's just not realistic.