People who uses the word "obnoxious" are also obnoxious. There are many unpleasant words, you have to use some of them and people don't like any of them.
Workplaces are where many of us spend a large percentage of our waking lives. So, it is "normal," unfortunately. This is why HR language and norms have broken containment into the non-work world. (Whether that's a good thing is another question.)
There is not one single discourse norm to rule them all and calling out every little thing as too offensive is just annoying. Yeah, yeah there are no midwits, everyone is a unique little genius flower, yeah.