Can FB, nothing good comes of it and time will dissolve thinking about it. ;-) IMHO
500$ for IDEA doesn't look that bad when you add up how many hours pays 500$. IntelliJ is flawless except for aab is not implemented yet in the exporter. Still, that one bit of command line is nothing to FB hell.
This is the issue we have up for aab:
https://youtrack.jetbrains.com/issue/IDEA-272455