Opinion is opinion and hypersensitive outrage is hypersensitive outrage. Obama stated his opinion without providing any basis in fact many, many times and the left didn't seem to mind then. Double standard is double standard and hypocrisy is hypocrisy.
You're totally right, your post is an excellent example of a double standard. The fact that you're even trying to equate Obama stating his opinion without providing the factual basis with Trump's repeated assertions of things that are demonstrably, provably false, even in the face of explicit pushback to the contrary is just sad.
If you believe Obama repeatedly engaged in this sort of deliberate denial of verifiable reality then by all means post examples. If not, please admit your double standard. My guess is that you will quote things that Obama said that later turned out to be not true and try and act like that's the same thing.