Yeah, you're right. I didn't even notice it said curved.

Here are the flat mounts.

regarding Command strips: I've used the same 3m strips since 2017 for my own setup and they have been rock solid. I have used them to mount other setups as well and I still haven't had one fail.

I have these attached to a gopro mount which has a converter to a cammera mount (which is what the base stations use). It's rock solid.