Allow me to summarize how beyond stupid this theory is. Per this theory the Obama administration conspired to bring this Russian lawyer into the country (along with a couple of KGB looking types) to trick Trump Jr. and Kushner into apparently colluding with the Russian government.
Here comes the good part. Then these Trump hating conspirators waited until after Trump’s been elected, and in office half a freaking year, to drop this bombshell they’ve had in their back pocket for over a year.
That’s how stupid this whole theory is. But the Trump campaign realizes that it is impossible to underestimate the stupidity of their supporters. The personality cult will believe it no matter how obviously ridiculous it is.