This “dossier” was used by Obama’s FBI to get wire taps from a United States Foreign Intelligence Surveillance Court (FISA) to spy in America on an American candidate for President, Donald Trump. Other people wire tapped were Trump’s campaign chairman, Paul Manafort and former Trump campaign adviser Carter Page.
From the memo, last paragraph:
The Page FISA application also mentions information regarding fellow Trump campaign advisor George Papadopoulos…The Papadopoulos information triggered the opening of an FBI counterintelligence investigation in late July 2016 by FBI agent Pete Strzok
The dossier was therefore not responsible for the issue of FISA warrants on Carter Page. The rest of your argument is thus invalid.