I have no idea if this answered yet, and I'd like to know
Is this compatible with GameMaker Studio 2?
There is currently no support for exporting to GMS 2, but it could be added of course. See the following issue for more information: https://github.com/bjorn/tiled/issues/1642
I made a similar map editor that exports to Gamemaker Studio you might want to try https://defiance.itch.io/map-maker