No, Astros/Dodgers would not have "grown the game" (certainly not on its own), but it would have been a series that 1) had a backstory, 2) would have been easy to get average fans interested in, and 3) would have involved a much better team on the NL side. As I said, if Acuna was healthy, and the Braves were actually a good team (instead of winning fewer games than the Jays in a cupcake division), then I'd have no issues with an Astros/Braves WS. One of the reasons I hate watching the Rays in the playoffs is because their fanbase is dog s***. Whereas, the 3 games in Atlanta are going to have rabid fans, so for me, it's more fun to watch games where the fans are passionate.
Do I want the game to grow and succeed? Of course. I'd also have no problem if two small market teams were in the World Series and national interest was down as long as it had entertaining qualities to it. Hell, I'm a Blue Jays fan. The Jays in the World Series would crater national interest in the US. I wouldn't care one bit. But I do care about the entertainment aspect of it. There is simply no juice to this series. The only way they can get some is to have great games, and the first two were duds. Going to a game 7 or at least having some nail biters the next few games would help.