Adding photo comments in Classic without public web collection/album sharing?

I'm wondering if there's a way to get Lightroom Classic to allow adding comments (in the Comments pane—Library view, below Metadata) without making a shared album fully public via Lightroom sharing.

In a hybrid Cloud/Classic situation, comments on shared albums are enabled and sync even if the album is invite-only and not shared with anyone. I.e., it's essentially still completely private. Crucially, comments written in Cloud (LrM/LrW) show up in the Lightroom Classic Comments pane in the Library view. It's a great way to leave narrative notes that (mostly) sync between Cloud and Classic.

However, I can only read these comments coming down from Cloud in Classic. I can't seem to add to the comment stream in Classic—unless the album/collection is made fully public on the web with an unprotected link. Then, I can add to the comments in the Classic interface. A fully public album seems like a bit of an odd requirement off the bat. But especially given that Cloud apps don't require it... is there a way around this in Classic that I'm not seeing in settings?

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Currently using Classic v13.1, MacOS Sonoma 14.3.1.