Rubio is so despicable.
IMO totally blackmail compromised, probably with a combination of being in the closet and financial misbehavior while still in FL.
Deep State is setting him up to be another GOPe/RINO backstabber like McCain and Graham, once McCain finally slips from the public stage.
Besides those possibilities you mention of possible misdeeds in Senator Rubio's past, there's something about him. He has a great personality, he's articulate, and would be a real asset to dark forces seeking to take over conservative politics from the inside. But he has a warped world view. Anything Russia he sees through the lens of being a Cuban national. That's because he was brought up immersed in that world view. And then there's those statements where he definitely takes the side of minorities and "oppressed" groups. I don't think he was brought up seeing himself as part of mainstream America. The FACT that he doesn't meet a lot of definitions for natural born citizen just adds to that, having parents who were too lazy or too unpatriotic to the US to become citizens before he was born.
That's my outlier take on Senator Rubio, FWIW.