The problem is that many people don't like 2020, which is a re-design of the software. I actually know very little about it, but everyone I know in TV/Film absolutely hates the new Avid, and sounds like as long as you bought a mid 2019, you're ok because the system wipe and install from boot disk to Mojave will work.
I really don't know what I'm going to do, because this laptop is going to die at some point and I work in a well oiled ecosystem that requires the 2018/2019 flavours of Avid.