The firmware does work! (Note Exception, Check Issue)
If you want the version without S-Curve Acceleration Enabled, check the previous release, if you are building directly from the source code, directly disable inside the Marlin Configuration. Note, if you want Classic-Jerk for whatever reason, this project has been configured to work with that as well.
Full Changelog: https://github.com/JeriahN/MakerGear-M2-Marlin-v2-Config/commits/v1.0.0