I don’t know whether “long stretches” is accurate, but there did seem to be much more bragging than is usual in political speeches. Or maybe a better way to put it is too much direct bragging, the kind you might hear on a schoolyard.
There is an old saying, “If you can do it, it’s not bragging.”
It's a simple and often minimalist recital of his business record in order to demonstrate he's shown the capabilities needed to fix the country's problems.
If Trump was a braggart he'd be talking about his help with the East Side Rapist, rewarding the bus driver who talked the suicidal lady off the bridge, getting the soldiers on furlough home via the Trump plane etc etc. Trump is a very modest man. Meantime mediocrities like York think they can narrow the accomplishment gap, by belittling Trump's success. Whose camp are you in, Maro? Praying you're not another pettifogging fence sitter, because it's those who've brought us to these straits.
Keep in mind that campaigning is selling yourself to those judging if they want what you are selling. Which of course is yourself to the elected political office you are vying to attain.