Boot is, as usual, overwrought and constructs a strawman conspiracy by overstating and mixing together a bunch of issues. Once again The Bulwark, home of frustrated neo-cons, sounds like a fever swamp.
The item du jour is a claim that Clinton personally approved a plan to generate some campaign dirt by tying Trump to Putin and the DNC hack. The claim comes to us through the CIA but originates with Russian intelligence. Whether the claim is true depends on believing two things: firstly that the Russian report is a truthful account rather than disinformation, and secondly that the analysis is correct. In this, it closely resembles the Steele report (claims which might or might not be truthful, and if truthful might or might not be accurate, produced by people working at removes under ultimate direction of the Clinton campaign). Undoubtedly there are people who will, for reasons known only to themselves, discard this new item as false while continuing to press the claims in Steele's work. Some of them write for The Bulwark.
However, no-one has denied that key players were briefed in on the Russian report. Either they believed it, or not. If the latter, no foul. If the former, very foul indeed.
Likewise, various important players were briefed in on Flynn, at a meeting during which Comey asserted Flynn's conversation with Kislyak was legitimate. What was the basis for continuing to investigate Flynn, one is left to wonder. But it happened nonetheless, and enough information has emerged to show that the investigators tried very hard to squeeze Flynn when they had no excuses to do so.
So, yes, at a couple of junctures, people on Boot's list were aware of underhanded things going on.
Secondarily, the Steele report at this point has no credibility. It's not merely that the document was ridiculous at the time it first appeared - remember, reputable media agencies didn't want anything to do with it until they could excuse the salacious details they revealed with enthusiasm by referring to it after less reputable sources brought it to public notice. The Steele report is, basically, "fabricated evidence". And if Steele's primary sub-source is or was a member of a Russian intelligence agency, then a lot of people in and out of government skated very closely to "knew about it, welcomed it and lied about it" with respect to Russian interference.
Is it a grand conspiracy? No, there is just a bunch of things that tempted people to behave discreditably. Stacking it all together and making it sound like a ridiculous conspiracy is a tried and true way of discrediting criticisms that each individually have merit when some charlatan doesn't dress them up in a clown suit. If people like Boot and Miller want to run that up a flagpole, fools are free to salute it.
IG Horowitz's report is another weak reed to grasp. The methods of the IG are straightforward: he asks questions; people give answers. In the absence of evidence which suggests the answers might be incomplete or false, the answers are accepted. To find Horowitz's report useful requires first believing that people in potential jeopardy would not shrink from candour. Durham's report has yet to emerge. I suspect that the only indictment so far may ultimately be the only one. But at least it will represent the findings of a proper investigation, not a summary of Q&A.