Ah I was wondering if Razer (the company) had put out new phones and you had one or had tried one out. I remember MKBHD saying nice stuff back when their first device dropped. Since you're using the 2020 model and are looking at other brands I take it they're not still making new phones? Haven't seen anything about them in ages!
Btw you should be aware Motorola is Chinese. It's owned by Lenovo who have a history of preloading malware on their laptops. Whether that affects your decision is obviously up to you, just making you aware. Custom ROM should sort it but it's very easy to hide things in firmware.
I'm sure you know this already but you can use Neo Store (great choice btw I use the same!) and apps from it without a custom ROM. Magisk and anything relying on it is a different story ofc!
I do think Motorola's Razr foldable looks super cool and it hits my love for nostalgia tech but folding screen tech is still very early days so I'm personally waiting a couple more years before buying another foldable phone.