So
Ubuntu has confirmed they are dropping support for 32bit from 19.10.
The Wine devs have expressed concern.
What this means its it's probably going to be at least a pain, and maybe not possible, to run 32bit Windows apps on Ubuntu and Ubuntu based Linux distros.
My current set up is Linux Mint 19.1 (based on Ubuntu 18.04) and I run K4PC 1.16.0 and ADE 2.0.1 under wine for DRM purposes. They're both 32bit apps. I don't know if either are available as 64bit but even if they are (now or in the future) that would force me to upgrade to problematic versions i.e. ones that don't work with Alf's tools.
So I can see me switching distros in the not too distant future.
This also has implications for my day job where I work on Linux software that runs on 64bit OSes with 32bit support. But that's less important