Arpon talked about this extensively on his latest podcast.
The Habs using the "couldn't see him live" piece was only a part of it and it wasn't like, we can't see any first round Russians live so we won't draft any, ever. It's that what they couldn't see on video was part of their lingering questions on the evaluation of the player.
Simply put, they didn't think Michkov was a can't miss superstar offensively. They wondered if they could build a team around both Caufield and Michkov in their top 6 at their size and skating ability. They already locked in Caufield long term so they value that type of player but team compensation was something there.
They had problems with his neutral zone play, the way he creates offense and whether it would be a great fit for what they're doing. But the defensive zone stuff was a big negative they couldn't quantify on video. There were many stretches where he's just not on the screen while his team was in the defensive zone for 5 to 10 seconds
Lastly a high ranking scout for the Habs told Arpon to watch Demidov. They think he's the real deal.
All the question marks, the contract, the deep dive on the player, the team composition and the fact they loved Reinbacher and had been all over him all year from all across the org and scouting team, led them to be more comfortable with Reinbacher as the choice.
They don't hate skill. They showed they will take Russians. They just didn't like the Michkov risk, fit, and they didn't think as highly of his ability offensively. I think we know, since they'd have taken Bedard at 1, they'd be more than willing to accept a generational superstar talent at sub 5'10, they just didn't believe he was one.