I've never said anything bad about the service they run.
I just feel that nothing has changed about the ownership except for the fact that they got some venture capital from some entrepreneurs who saw that they were making money. Perhaps it's irrational, but I try not to support businesses that are run by people who treat people with such disrespect. You've probably never had to deal with this, but translation is hard work. The final product is pretty much something that you have created yourself. And then to see it scaled down to youtube size quality, stuck next to a bunch of ads, and not even edited to have the "If you paid for this you are getting ripped off" screen taken out is beyond infuriating. And when you ask them to take it down, and they arrogantly refuse because you can't do anything about it, you can't help but assume they're a bunch of immature assholes trying to leech off of someone else's effort.
Maybe it is bitterness. How many people really stood up against this kind of behavior? Times have changed since the days of VHS and IRC, and there's a large disconnect between the people that put the effort in bringing stuff the community and the people that just click the download button.
So yeah, it's personal, but I'm pretty sure I made that clear from the beginning. We support evil companies like Phillip Morris that go legit all the time. Luckily I don't demand anime enough that I can live without their product.