Just because Debian isYes it should. They have less fiscal motivation to horde software than other distros, and a distro having it's own tree is a mild version of software hording in which you don't do anything legally to stop others from copying your code but you don't do the work necessary for them to share in it either.
completely OSS and maintained mostly by unpaid volunteers, that shouldn't keep
them from having a seperate tree like everyone else.