Presumably the ex-members do, just like Lumi and Yuri have their own models.
Regardless of the other streamers' reactions, and regardless of Lumi's intentions, this was a really, really, really stupid thing for Lumi to do, and I'm dumbstruck that she thought this was appropriate, especially given her experience in the industry. If I were her manager I would be irate that she would do something so stupid and invite this kind of backlash. I think at least some discipline is appropriate for this. Maybe she needs to take a week off for spring break.