I'd say 2 reasons:
1) Switch 2 ports will still require significant resources and so they will be late ports for AAA, not day 1 releases. Similar to hogwarts on Switch 1, I think they'll be announced later once the devs have started the earnest work. Right now I doubt it's on their priorities.
2) lots of smaller devs that would be desperate to have their games being releasing on Switch 2 are late to receive dev kits







