For those not aware, Starlink has no problem with working in motion as it's used on airplanes travelling at 1000km/h. This is more of availability announcement for end users.
Starlink user terminal is "physically" not designed for working in motion. That is, it has not passed any safety tests that ensures it won't dismount, and fly off and damage property or injure people. The Starlink system is absolutely designed to work at high speeds (both as evident from comments in this post from people maintaining connection at 100km/h to it being deployed on airplanes).
