No, it's not. Unless you believe in 2016 the GOPe was all in for Donald Trump.
Let's review, shall we? In 2016, there was a battle waging from the grass roots at the local level within each State against the GOPe. Ted Cruz was in the trenches holding the standard for this grass roots movement fighting for every appointed delegate to represent this movement at the Convention and vote against consolidation of power at the national level. Contrast that with Trump who did not get involved with delegate selection and let the GOPe seat his delegates for him. All Trump cared about at the time was getting delegates who would vote his way on the first ballot. He wasn't looking at intra-Republican politics. He wasn't caring about delegates who were truly loyal to him. He only needed that first ballot.
Cruz was fighting for the direction of the GOP, while Trump essentially struck a deal with the GOPe that they wouldn't stand in the way as long as he let them stack the Convention with delegates supporting their power grab. And what was the biggest threat to the GOPe? It certainly wasn't Trump. It was Ted Cruz.
When the Convention arrived, those GOPe delegates voted for Trump on the first ballot just as they were obligated to do. But when it came to changing the rules, every single one of them sided with the GOPe at the national level, further stripping power away from the local levels.
This isn't the first time we've had this conversation. Yet for some reason, each and every time, you choose to play dumb. Of course you would have found out the hard way if it had gone to a second ballot. And who knows what other deals were cut between Trump and the GOPe. As
@corbe already pointed out, having Paul Manafort as a campaign chair - the man who on behalf of the GOPe single handedly killed off Reagan's 1976 bid - did not exude anti-establishment sentiments. This was confirmed when Trump chose Mr. Establishment himself - Reince Priebus - as his chief-of-staff.
This is why you never heard Trump mention anything about draining the swamp until less than a month before the November election. I am glad Trump got elected, but let's not lie about how that happened.