Whether it was anti-semitic or not is just one of many issues with what they did. When a big company trademarks your name, that’s a serious personal attack; its really intimidating - try to imagine if a big company came after you personally like that.
If a person, or company, does something sufficiently evil I don’t need to see a pattern in order respond. In Behringer’s case, they already crossed that line for me. That said, I think you can indeed find some patterns of poor behavior on their part in addition to that one episode.
Maybe, Personally made me think it was less an attack from a corporate entity more just Uli Behringer himself making a bad retaliatory joke. I think the company earns some of the flak, but there are a lot of people pissed off that they can’t just fix the prices higher like the good old days.
I don’t think what you just said even begins to make sense - this was not some small effort by just Uli, it was his company. But I am not going to argue about it further.