I can sympathise the maintainer thoughts but only up to a certain degree. In a perfect world we would all be able to plan and upgrade accordingly on time and without any hiccups but this is not always the case.
We've actually been bitten by this and scrambling to find a solution as we are still running Ubuntu 18.04 on AWS OpsWorks (this is actually EoL and will be shut down next year).
Migrations steps are being planned but we still need to retain some services until we are done. This PPA worked just fine a couple of days ago, so paying Freexian just for the time we need for completing the migration seems kind of a stretch, for lack of a better word.
Does anyone know where to find a mirror of this (or even .deb files)? We could self host it for our own internal use until the migration is complete.
Thank you.