I wanted to revive this thread, because I have the same issue with the notch on my 2022 MacBook Air. At the moment there is still a large amount of space on the toolbar, but DEVONThink has disappeared, presumably for not having enough space. I wonder is there any thought about making the DT button in the toolbar smaller (i.e. less wide) a la the Dropbox or Google Drive logo/widget?
In the meantime, if this button for DT is missing from my toolbar, how can I still e.g. capture from web to DT?