Pretty sure I'll spend the next year tripping on random things like "how did I change where my screenshots save to, again?" and all kinds of other tiny papercuts. The people I know who change machines more often have complicated scripts to do various things with their dotfiles but I'm not that clever.
It literally all gets transferred with the backup.
I went from an m1 MacBook to m5 earlier this year. It was almost too smooth - I just felt like I had the same computer and not a new one. Which in a way was disappointing.