From official Hololive Reddit posted Mar 4, 2022:
https://www.reddit.com/r/Hololive/comments/t6jlnj/male_vtuber_auditions_for_hololive_english_are/"Male VTuber Auditions for hololive English Are Now Open!
COVER Corporation (Chiyoda-ku, Tokyo; CEO: Tanigo Motoaki) has announced the start of male VTuber auditions for hololive English, a VTuber group under the company's VTuber agency "hololive production" which specializes in livestreaming and content creation targeted at the English-speaking viewer base."
From the wording, it sounds like the applicants from these auditions will be integrated with hololive English. There might not even be a Holostars EN. This would make collabing much more manageable as they would be associated in one group altogether under the hololive English brand. They would grow faster as a result.
The applicants who pass the auditions must be pretty good. It's hard to be believe they won't take any risks.
At the end of the day, the chat just wants their oshi to be happy, even if their oshi collabs with someone the chat is not particularly fond of.