Some groups have definitely taken it as a preference (sorry for the daily mail link, but it was the most succinct): https://www.dailymail.co.uk/news/article-3323166/Some-colleg... and tried to tie it to clapping as "triggering", but they're pretty uncommon.

One example of someone not-ironically actually stating that jazz-hands is better than the "triggering" clapping is the Oxford SU Woman's Campaign: https://twitter.com/womcam/status/580389025892175872

You can also

In fairness, there are a lot of people, making up a lot of things on this discussion thread. It's kind of disingenuous to only call this poster out.

I mean, ideologues are gonna ideologue.