You guessed it with booklets or anything long format really.
As a 20+ year Adobe user, I tried switching about a year ago. Seems like the only way to give it proper go, was to dive in head first and force myself to exclusively use Affinity. Of course there’s a bit of a (frustrating) learning curve but overall it went pretty smooth. I genuinely thought I was going to make it work.
That was until I had to setup a 40 page catalog. Ran into various minor issues, but not insurmountable. IIRC the main issue that ultimately made me go back to InDesign was the handling of support assets and glitches as the catalog got more “heavy” with stuff.
I think I would have stuck with Affinity if I could go back and forth between Publisher/InDesign, but I couldn’t take what I started with and finish in the other app.
They would understand that socialism is not communism. Also you can have capitalism and socialism at the same time, you just have to give and take a little.