I have seen confirmation about several of the suspended accounts:
Aaron Rupar confirmed he posted a link to ElonJet's Facebook page [2]
Drew Harwell (of WaPo) confirmed "in the course of reporting about ElonJet we posted links to Elon Jet" [3]
The Verge says Mastodon tweeted a link to ElonJet [4]
Micah Lee confirmed he linked to both the Twitter and Mastodon accounts of ElonJet [5]
1: https://www.reuters.com/technology/twitter-manually-reviewed...
2: https://aaronrupar.substack.com/p/aaron-rupar-twitter-suspen...
3: https://boingboing.net/2022/12/16/musk-ragequits-twitter-spa...
4: https://www.theverge.com/2022/12/15/23511894/twitter-suspend...
5: https://theintercept.com/2022/12/16/elon-musk-twitter-suspen...