Note to non-existent entities

[MaxDau]

I have noticed that I can create notes when the parentId does not exist. For example, if I specify an ID of a case that never existed, i got response for new note with parentId = input and parentName = null.
Only if I specify a parentType that doesn't exist or a parentId that I don't have access to, I get a fitting output.
Is there a reason for this possibility or is this a bug?

[emillod]

Hello MaxDau
If you remove parent record, note should still be in a system, because admin can restore parent record. Second thought: it's working that way in all parent fields. You can assign calls, meetings, etc. to non-existing parent record But maybe note even after removal of parent entity should be still visible in stream entity - https://demo.eu.espocrm.com/#Stream