For notes to be easily legible they need text formatting!
It makes decent sense to not have text formatting available in the SE and to add it in at 2.X as an extra feature for all the items, (i.e. Entities, Flow Fragments, Descriptions, etc...) but the Notes and only the notes require text formatting to be worth anything!
Without text formatting enabled on notes the user is literally better off importing text documents externally as assets and using them as notes (and right now, in most cases i do exactly that...)