If memory serves, you have claimed repeatedly that the Steele dossier was used to kick all this investigation off. You have said it repeatedly, and loudly.
I guess I could comb through all your old posts to prove that, but I don't think you are worth the effort anymore.
Now it is simply "part of" the justification for the FISA warrant, which no one really doubted.
The IG report you listed stated that there were good reasons, as I have pointed out, to take the dossier somewhat serious to begin with, albeit with fact checking all the way.