Scribe
Legend
What we do know is that Stranger Things, Critical Role (and other actual plays), Ghosts, Magic tie-ins, the D&D movie helped 5e surge.
The game was surging on release, when it tried to appeal to the lapsed gamers, and was then injected with a shot of adrenaline thanks to things Wizards did not do right up to the big winner, the Covid Bubble.
The game absolutely did pivot after that point and is where (2018-2020) people point to the game going after a 'new audience'.
The new players were already coming in, 6 years of growth that was unplanned for, and they were coming in for the game that was released to appeal to the gamers who left during 4th.
The movie absolutely didnt help 5e surge, but I know thats a personal thing for you.