It's now available -- Musk has "finally decided" you can actually take a Starlink with you.
Let me remind you: Since there is no fancy-pants antenna alignment required (no "splatter" problems imposed on others if you get it wrong) there never has been a technical reason for this to be prohibited. It either works or it doesn't and its on you, not them.
I guess it comes down to what you need. If you're working from your RV then unlimited data probably trumps all, particularly given that the alternatives -- cell hotspot/tether and Hughes -- both do have usage limits, some "hard" and some performance-destroying. Further Hughes has latency problems that make many things untenable. Its the nature of geostationary satellites.
I must say this however -- the so-called "future of sub-$100 unlimited internet anywhere", given this offering is a Unicorn fart.
$135/mo and $600 up front for the hardware -- an effective penalty rate of $35/mo just to use it from different places from time to time and you get de-prioritized if fixed-installations are consuming available bandwidth? In other words you get it in the hole twice?
PS: Starlink can trivially determine, if they look, that you're moving the terminal equipment so claiming its for your house and then putting it on the RV is asking for a canceled account and $600 worth of useless hardware.