About the GoG store’s second class treatment: it’s always worth it to email the publisher and ask them if they plan on updating their game on GoG!

I did exactly that a few months ago when I wanted to buy I was a teenage exocolonist - emailed Finji and let them know that their game was not up to date on the platform I wanted to buy the game on. They replied rather quickly and the game was updated a few days later. It was very nice because the game was on sale and, thanks to their quick reply, I was able to not miss the sale.