As someone pointed out, Trump fires everyone and closes all his local offices after each state’s primary, so he has no ground game and so his delegates are not going have a warm feeling after the first ballot.
I think the conclusion is speculative at best, and likely based on some imaginary extention of the act of disbanding voter turnout teams. What Trump has been accused of not doing well is "delegate fluffing and turnout." That is independent of the actions relating to getting votes in primary and caucus contests.
Trump about to have his best month yet. If you think March 15th was pathetic for Cruz, you haven’t seen anything yet. His numerous third paces in the south will look good after a month in the northeast. Can’t wait!
After Trump bows out, then the GOP (possibly with Trump) can pick who they want to run in November.
The only good thing about that is Trump and the GOP has already assured that no GOP candidate can win in November. In which case, it's better that the RINOs once again take credit for losing. If Cruz lost in November, we would forever hear about how Cruz proves a conservative candidate can' win.