You came here looking for advice... so I'm not sure why you're arguing against the suggestions you're receiving.
You're showing a video of a 62hp Palette case (which includes a quad attenuator module, even in its very limited space!), to explain why you don't need attenuators in a 6u 84hp case. That seems weird. But even if you take their example, for a similar attenuator to hp ratio, you would need 10-12 in your case. You have 6.
If space is really the issue, my suggestion would be to ditch Links and replace it with an attenuating mixer module. Plenty of 4hp options that will give you at least three channels of attenuation. Both of your NE modules are going to really want some attenuation on their CV inputs... those 6 VCAs will run out quickly (and if you're wasting your VCAs as attenuators, you won't have anything left as an actual VCA). You could easily use 4-5 just on BIA (I always keep a 4ms SISM module right next to my BIA for exactly this reason).