A regression was caused with the unnecessary commit
https://salsa.debian.org/debian/adduser/-/commit/8d42193438f6c1500fb36cd5c24bf682888a611c
to close https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=664869

This undocumented syntax was known in use in scripting (such as nvidia
tegra debian based distros). Instead of disabling two argument syntax
this should instead be reverted and the manpage should be fixed to
advertise this syntax since it is functional and in use.

Thanks,
theofficialgman

Control: severity -1 wishlist
Control: tags -1 wontfix
thanks

#664869 was open undisputed for ten years, nobody cared.

I am tagging this bug wontfix and will close it with the trixie+1
release. Please point me to the place where this accidental misfeature
was ever documented, I might revisit my decision then.

If this actually was never documented, please refer this issue to the
technical committee.

Greetings
Marc