My biggest issue is that they don't interoperate across browsers. The idea that I would use a single browser is crazy. I don't use a single browser on one device on any of the devices I use. If the browsers treated themselves less like silos, people would be more encouraged to use them for this sort of note taking.
> The idea that I would use a single browser is crazy
Honestly, and as someone who uses >1 browser, you are an outlier.
For the vast majority, you click the "beachball" or the "red fox" and that's how you internet.
And among those that use >1 browser, I don't want bookmarks or other stuff interoped/shared. I'm specifically using seperate browsers to keep things seperate.
I don't know how well Firefox Pocket works, but Google seems to have no issue keeping bookmarks between phone and desktops synced just fine.
Should be easy to fix. Firefox already shares such data with other Firefox instances on other devices. And a UI to export the bookmarks is already present, so exporting to other browsers should be easy to automate.
But, I use Firefox everywhere except for one Android table that because of Google stupidity/cupidity/rapaciousness doesn't have room to install Firefox even though it has a nearly empty 128 GB SD card.
I have had a good experience with the browser plugin floccus, which I use to sync bookmarks to a self-hosted NextCloud instance. It has cross browser support. I have a 'sync' folder that is shared across all browsers/devices, as well as local-only bookmarks on each device (home/work/mobile/etc.)