On one hand, it could be that they want to continue to showcase Bogosian in case someone happens to catch him having an atypical good game. On the other, there is the persistent use of a guy like Sobotka on the 2nd line even when it was pretty clear he was a detriment offensively. I don't think Botterill is pushing Krueger to play Bogosian from how Botterill has operated in the past both with his comments about the coach making the lineup decisions and his odd-ball recall commentary about guys like O'Regan and others who he would have liked to have seen but didn't (aka. his coach was under no obligation to play a recall).
I like Krueger more than any coach since Ruff. That said, his insistence on some of these roster moves is aggravating. In a way, I'm reminded of Tennyson getting first pairing TOI and then sticking around after the injury bug (Bogo included) passed early in Phil's first year because Tennyson "practiced the right way". I'm sure Bogo is doing what the staff is asking. There remains a tremendous amount of deference in hockey in general for what someone has done before, and also for draft status, that have nothing really to do with on-ice performance. Vets play and make mistakes? They stay in the lineup. Younger players or non-tenured vets (ie. new to the team) make those mistakes and they come out of the lineup. Buffalo has been running that sort of inconsistent party line for just about forever. It's old school, Eddie Shore ancient sort of stuff, and they're steeped in that bit.
That said, it's a strong leader who would step in and stop the madness. Botterill could very easily make the situation stop by simply sending Bogosian home. Is he afraid of what the team group text is going to look like? The room reaction? I don't know, but for the good of the many, fans and standing points included, it needs to be done. Metaphorically, Jason needs to take Zach out behind the barn.
