Agreed about wishing it would be open source. The most usable OSS combo I’ve found for using my rspdx over a network is SoapySDR and CubicSDR and CubicSDR hasn’t had a release since Feb 2022.
I’m forcing myself to remember that this is just essentially a beta release, with a lot of features missing. With as long as it took them to release this version, I’m not holding my breath to get new features any time soon though.