Do you have a link to that info? I can't find it on deadair's website. Looks like they would be pushing that hard.
They are only promoting the Key-Mo since that is their product but it is threaded in 1.375"x24. Many manufacturers are building their suppressors to allow adaptors in this thread pitch. This is great if you are invested in mounting devices and want to run a different suppressor. Below is a list of supressors with this capability.
Dead Air Nomad®
Energetic Vox®
KG Made Rogue X®
Rex Silentium®
RMS2 Hopaii®
SilencerCo Harvester 338®
SilencerCo Hybrid®
SilencerCo Omega®
All of these suppressors give you the option to run either the Key-Mo, SiCo ASR mount, Q Plan B, Griffin Plan A, Hansohn direct thread, YHM Phantom QD adapter, Area 419 Adapter, Diversified Machine, and probably some others I left out.
I would go with the Nomad due to the modularity of the can. This has different options for end caps, brake, and mounting options. With the Q Trash Panda you are limited to the Cherry Bomb mount.