I searched and found nothing like this suggestion. If I missed something, apologies.
Use case or problem
The Share Extension for Obsidian on iOS/iPadOS works great. I use it frequently for capture on those mobile platforms. It would very useful to have a share extension for Obsidian on macOS as well
Implement a share extension on macOS. (Take a look at Agenda’s share extension for a best of breed solution, IMO).
Current workaround (optional)
Use multi-step approaches such as Drafts.