” only needs reasonable suspicion”
You’re probably right but, again, we’re talking about a guy in his driveway.
Also, HAD there been reasonable suspicion, the cop would have stated so, e.g., I have a relative who was walking down the street in LA late at night - cops, responding to a robbery complaint, detained him and asked for ID, etc. Whole rigamarole.
But they did tell him they were responding to such complaint.
Not the case here, which is why everyone is jumping on you!
I don’t think the officer immediately needs to explain what the encounter is for. In this particular case, he wasn’t given the chance as the taper refused to show his hand and immediately became agitated, escalating the situation.