That was very interesting!

Could these techniques be applied to logic circuitry too or is there something preventing that?

Logic circus don’t have the concept of word and bit lines - metal layers are much much more complex. And it’s inherently less economical to stack transistors because you would have to repeat many steps for every layer.

I get that the connection between each gate wouldn't be as uniform as in storage. I guess my question isn't can the exact technique be used, but rather the same principles/ideas.

I guess its hard to etch all the different connections between gates if they're not uniform?