I think the difference really is that there’s no evidence of Trump or any of his campaign people doing anything illegal with the Russians related to the election or, seemingly, related to anything else. Yes, Mueller has indicted a bunch of Russians for alleged election interference, but no Americans. Manafort was indicted for his relationship with Ukraine, not Russia. Flynn for supposedly lying. Papadopoulos case sounds crazier every time something new is said about it. Apparently he was the target of a trap laid for him by the FBI. It was intended to catch his whole leg, but only got his toes.
With Smollett it’s pretty plain the PD, the mayor and apparently the prosecutors really had evidence on him. That’s a big difference.