I have a Moto Z2 Play and am very happy with my existing 4G. Let's assume the new shiny thing turns out to be really good and I encounter a good reason to adopt it, because that's what usually happens. I won't buy this bolt-on to my current phone to use it because..
- Mods are expensive - it won't be far off the cost of a brand new Moto G8 or G9 with built-in 5G.
- It won't work _quite_ as well as I hoped.
- The hardware will murder the battery life and pocketability of the phone.
- By the time 5G is reasonably mainstream my current phone will be dead, due to its knackered non-removable battery / finite-life flash memory / sat-upon screen.
Thanks Moto, I'll pass.