I don’t seem to have any issues typing out abortion. Even autocorrects to ‘abortions’, as in plural.

No, it's not. It's licenced under the "Source First Licence" which prohibits commercial use, violating the four freedoms and the Open Source Definition.

I didn't know you couldn't run FUTO keyboard on iOS. Hopefully that will be implemented soon.

Yes it does, but it needs to be enabled, and you need to load an external gesture typing library. As of now, Google's is unfortunately the most robust.

Go into Heliboard's settings, in the Advanced menu, at the very very bottom, there is a "Load gesture typing" option.

After you load a library, the gesture typing menus become visible, and you can customize it as much as you need.

Also, they recently started an opt-in gesture typing collection, to make an open source gesture typing library, which will eliminate the need for Google's library, so if you like swiping, you can help by participating!

Currently you have to load a proprietary google blob to use swipe, but they're working on a swipe library funded by NLnet, that should release very soon.

https://nlnet.nl/project/GestureTyping/

https://github.com/HeliBorg/HeliBoard/issues/2226