generally no.
But about hoard almost killing 5e from the start? Yea man. It does sound like that to me. I mean it sounds like an alternate universe.
We even have proof that 5e was doing so dang good through that time that WotC was stunned. The initial print run at Amazon sold out fast. They had to pull books back from retail channels to feed Amazon. They then rushed a reprint that also quickly sold out. They delayed other books to do another print run, with one report saying they doubled the initial print run, and they sold out. Early on the PHB went out of stock at Amazon like four times. And each time at Amazon the sales rank shot back up to top 10 area.