How come you say this? That is untrue. The TPMS functionality on the Maxicheck Pro was about more than just clearing errors. "Never have been" is plain wrong.
The Maxicheck Pro DID have a reprogramming function to program the sensors into the PCM (for cars that don't have a relearn facility). See this link for a Youtube video, where the Maxicheck Pro is being used to make the car use new sensor ID's... (@4:00min)
https://www.youtube.com/watch?v=9OPUHxl058Y
Also, there's another vid of someone that experienced it himself. He was smart enough to not just overwrite the software he was using, but used another SD-card to put his update on. Now he's got TPMS still on the old SD (ofcourse, in time it will get outdated...):
https://www.youtube.com/watch?v=xfNAXNkP6MQ&t=823s
Clearly an update somewhere in time killed this functionality, and it probably was a commercial choice...
The Maxicheck Pro I just recently received was shipped to me Sept this year, and there is no sign left of TPMS... f/w on it: v5.04...