Please make the connection here. The allegation is of her "being groomed by the Russians" for a third party run. The word grooming means something. That implies traitorous behavior: contact with Russians that instruct her to do something that might harm this country. This is criminal activity, the same kind of thing that they're trying to impeach Trump for, foreign meddling.
Tulsi Gabbard is a person who has the highest security clearances one can have. If HRC was actually serious and credible about this, it's not something you'd casually trot out on a podcast, a person of responsibility would report evidence of this activity to the proper authorities in the FBI. But this is a bullshit smear, and the fact that it's being handled through the media instead of law enforcement shows how much of shitty sham this is.