Pyonta and tatara_kogasa_(umbrella) are currently being used in a very different manner than konpaku_youmu_(ghost).
Youmu's ghost half is supposed to be tagged at all times. Pyonta is supposed to be tagged only "in cases where the hat acts independently of Suwako or otherwise does something interesting.", but it doesn't look like it's being used as such anymore, so it needs gardening. Kogasa's umbrella needs to be tagged "when [her] umbrella body acts independently from her humanoid body.".
I can understand Pyonta (which is originally just a lifeless hat, and it "going to life" is a fanon thing), but i think Kogasa's umbrella should be tagged at all times, since it acts like Youmu's ghost half in canon too.