I actually expected these videos the moment she said in her livestream before that she doesn't want to talk about Morning Musume now that she's graduated. I understand her good intentions, but sometimes the results can be double-edged. She's also smart to leverage on social media for things like this as she can actually get ad revenue from her videos, and I thought she would allow in-video advertisements and/or endorsements, if possible, in the future.
Maybe, a bit, UFP needs to change to accommodate situations like Haachin's. Maybe create a subsidiary for social media/YouTube personalities only -- they're not really celebrities who have entered showbiz, but rather normal everyday people that amassed a huge number of following on social media and can make an influence one way or another. That way, Haachin can still be protected both as a content creator and as a former Morning Musume member.