I just watched the Egnards video on this. I had lucky timing, I guess? We started a new raid a night or two before the fix and I had already run BB when the fix went up, so I haven't played it yet. Egnards says that it's possible with r7 and Darjelo says the same in this thread. Both of these people are credible to me and I believe both.
That said!
Egnard also details how the core mechanics of BB don't work at all in the raid below r9 unless you're playing the most basic 300k tier. Target practice doesn't work because marking enemies causes them to stealth, so you can't focus fire to burn one enemy down, picking up Target Practice along the way OR you can't use specials from Hunter & Batcher which are core to making the team function. Target Practice is also effectively reset each round. Now this TP reset between rounds bothers me less since the core difficulty changes when you eliminate Fox & Appo, so a new round is going to be easier than the first round, and you did that without any starting Target Practice. Even so, it's important to acknowledge that TP and Marked are core to how BB function, and hanging on to TP between rounds becomes much more important if Marked isn't working so it's already a nightmare to build TP stacks and to keep them going.
No Marked and no Target Practice ruins nuBadBatch.
This is part of a negative philosophy of game design where characters are given cool things that they can do, and then the important challenges for your characters are given their difficulty NOT by giving the enemy cool things that they can do, but by preventing the player from using any of the cool things they can normally do.
This philosophy sets up challenges for teams that rely on spreading debuffs by giving the enemy +1000% tenacity - meaning that the core mechanic of the squad simply doesn't function. It challenges teams that rely on dodge by giving the enemy can't-miss attacks.
This is wrong.
I don't care about a challenge being difficult. That's why it's called a challenge. But we save ability materials for a reason. People complain about not finding enough zetas for a reason. The reason is that we want our characters to be able to do the cool things that they were designed to do.
To tell BB players that they can only use BB if they give up Marked & Target Practice is to tell players that BB is no longer allowed to be cool.
EVEN WHEN OUR TEAMS ARE GETTING DESTROYED BY POWERFUL ENEMIES, we still want them to be cool and do cool things.
This is bad game design. CG is deliberately and purposefully killing the cool. And if they're doing that, why play the game anyway?