Plain old racism/xenophobia and sexism was very common and still is to some extent, though it is not as socially acceptable as it used to be. So I find it odd to only consider anti-white bias you encountered while ignoring any discrimination in the other direction. I strongly doubt it does not exist.

There is certainly stuff under the diversity banner, especially when done primarily with PR/image concerns that reasonable people can object to. But there are also real issues with discrimination, and efforts to address that are a good idea in my opinion.