I would also like to see this fixed in trixie. Especially because tools like ssh-audit suggest to set PerSourceMaxStartups to 1 to "protect" against dheat DoS attacks.
Is that severe enough for stable-proposed-updates and then a point release? IMHO yes. Especially because this was working in bookworm and is now broken in trixie. [1]: https://github.com/jtesta/ssh-audit/blob/4f9a630de4292663bd50fff4dfa347c53316ca37/src/ssh_audit/hardening_guides.py#L67
