I mean theres lots one could say here. Probably the most straightforward is igor danshenko, who was the primary source for the steel dossier, stating that he never intended for the claims to be taken seriously.
You're conflating the Steele Dossier and the Mueller investigation [1].
> However, the House Intelligence Committee, then controlled by Republicans, released in 2017 a report that stated that the Russia investigation had not started from information in the Steele dossier, but from information that the FBI received on George Papadopoulos.
Do not draw a false equivalence between a private investigation self-admitted by Steele to be an unverified "starting point for further investigation" [2] and an official completed US investigation created by Republican Rod Rosenstein, led by Republican Robert Mueller. Republican William Barr, after preemptively declining to charge obstruction of justice, declining to release the executive summaries of the Mueller investigation to Congress, and omitting multiple details about whether Trump's actions were knowing vs. unknowing, still affirmed ten instances of potential obstruction [1][3].