To claim Trump has obstructed justice, there would need to be, at a minimum, charges that state so. As Mueller did not bring charges, per policy, there is no credible basis to say "Trump obstructed justice". Even the Democrat leadership refuses to bring charges on such grounds.
As to me "being the only person saying Trump didn't obstruct justice", that would also be inaccurate. Democrat lawyer and scholar, Alan Dershowitz also stated that Trump has not obstructed justice based on the claims part 2 of the Mueller Report.
So to recap, people are in a faux outrage about claims that Trump obstructed justice, especially liberals. They had no problem with Obama shutting down the Fast and Furious investigation via Executive Privilege, but they are up in arms over Trump firing Comey which is within his authority as President to do.