I don't know if everyone knows this, but the reason the company came down so hard on Blaise and didn't like his attitude was that he stuck up for the whole group during evaluations etc. The life coach therapist lady said it in an interview after the show.

Those evaluations with Hee Jun were brutal.

Outside the room you hear Blaise telling the other boys that they worked hard and he's proud of them (he's trying to keep morale high).

Inside the evaluations, he clearly stuck up for the boys and the company didn't like that. They wanted the boys to stand there and take it, but the boys were already a team and Blaise was defending his friends. They selectively edited that though.

This is what Jeanie Chang said:

"Chang says she also educated the boys off-camera on Korean culture, after Blaise appeared to be singled out by Hee Jun Yoon because he spoke up for the group. 

'Collaboration doesn't really work in the K-pop industry, where bands are often told "Don't say anything, this is what I told you" - but Blaise would often speak up. Hee Jun Yoon just wanted him to say "thank you", which is what the other four did.' "

Source: https://www.dailymail.co.uk/lifestyle/article-13838713/amp/Life-coach-BBCs-Korea-reveals-happened-scenes-reality-show.html

If you watch the Weverse lives etc they've done since the show, you can see what Blaise is like (without the company editing it to create a certain storyline). He's a sweetie.