They've been the target of that twice at least, in 2017 over hate speech [1], in 2019 over pedos[2]. Large brands spend insane amounts of money on advertising, and they do not want their content to appear next to people facing allegations of sexual misconduct or otherwise bad behavior.
Hell just look at Twitter and how much advertising income they lost in the matter of a few months [4], as brands didn't want their ads to show up next to actual Nazis [3]. And instead of recognizing this and getting rid of the Nazis, Musk wants to sue the ADL [5].
[1] https://www.theverge.com/2017/3/24/15053990/google-youtube-a...
[2] https://www.forbes.com/sites/jilliandonfro/2019/02/21/advert...
[3] https://www.washingtonpost.com/technology/2022/12/06/twitter...
[4] https://www.bbc.com/news/business-66217641
[5] https://www.theguardian.com/technology/2023/sep/05/elon-musk...