If you have no reason to believe it's true, and understand the rumor to be unsubstantiated, why bother to spread it?
Did you expect the government to charge people in good faith? It doesn't matter it if it's true or not, even putting them in the slammer for a long time while awaiting trial and forcing them to hire expensive attorneys is a win.
The post you replied to didn't ask what they might be charged with. It asked what they "plan" to charge.
And you replied with internet rumor nonsense. It's actually fine to say "I don't know" or simply not reply at all when someone asks a question to which you do not have an answer.
What this reads as is a bunch of credulous X users trying to one-up each other and looking for reasons that Trump and his cronies are not once again lying to your face.
It is neither necessary nor particularly useful for them to be running plates for reasons you've already identified.
That's exactly what they have done - shared the information pointing to the organized attempt to interfere with the ongoing federal operation. This is a crime.
Physically obstructing them is interference. There are countless videos where protesters can clearly be seen to do this, even as they are then defended as supposedly "merely exercising free speech rights".