To get any meaningful answers, you may want to better specify what you mean by “talk”.

None of those reasons sound especially practical to me, but I may be in the minority. I’d rather wait and see that the game is stable and if I really want the extra content I’ll get it later (I’m patient).

I worry that pre ordering may send a message to publishers that a game doesn’t need to be good or even finished

Interesting. I can’t see any practical reason TO preorder. Are they going to run out of digital copies? Am I going to forget to buy it? I’d rather wait for reviews and a couple patches.

I assume https://github.com/dullage/flatnotes

What exactly are you trying to show us here?