A person who didn't intend for that kind of statement to mean something more sinister than it is would immediately understand it to be saying that "they" were followers of the politician and were, like all groupies, doing what they THOUGHT would show support for their man. That's all.
And you didn't include anything about his group having committed, long before the speech itself occurred, to being in Washington on that day.
The problem comes with bias. I'm sure I have my blind spot. But it's pretty clear you do. The timeline I have posted above shows how much Trump cared about what was happening. At 1345, police start radioing saying they have an effective riot. At 1413, the secret service evacuates the VP. At 1424, Trump tweets saying the VP "lacked courage." At 1426, Trump calls Senator Mike Lee who says he passed the phone to Senator Tuberville who confirmed he said they'd evacuated the VP an he had to go. At 1441, Ashli Babbit is killed.
And at 1513, Trump tweets asking for everyone at the Capitol to "remain [sic] peaceful".
At 1617, he tweets telling them to go home, clearly washing his hands of wrongdoing.
At 1800 he tweets again, implying they're "great patriots" and telling them to "remember this day forever!"
Hmmm. If he didn't think they were his followers, why was he tweeting at them? More to the point, why did he take 47 minutes after confirmation (if that was really the first he'd heard, which is scarcely believable) to ask people to remain peaceful? And a further hour before telling them to go home?
There's some serious cognitive dissonance if you think Trump behaved anything other than wholly, utterly recklessly and callously.