They do but, at least in theory, stakeholders should have the option to vote them out and have the funds go to return if they don't like how it is being run. Also the stabilizer proposals will expire relatively soon (one already expired but it was small and I didn't think it was needed). I plan to submit renewal proposals but at some point I might not, or they might not be approved. So the possibility of needing a pure return is still there.

K cool solid reason

Yes, hbdstabilizer is in fact "return proposal that does fancy stuff in the meantime", but I want pure return as a safety guard, utilizing it's long expiration and crazy high "payout" (it was created when proposals wasn't charged extra for distant end_date.