There's air inside the template, too.

I was pretty fucking careful mounting some BMTs... and was surprised to drill into a void within the bullshit "mount area"... pretty sure it's just a...

Agreed.

https://skimo.co/tech-binding-hole-patterns


Looks good, I say go for it.

Be ready to encounter air voids in the core when you drill, even within the mount area. As long as the screws snug up...