I totally disagree with everyone who says 'competitive viability is meaningless' because if your goal is to play the game, enjoy the game, and maybe learn about and improve at the game for years to come, then competitive viability is a fundamental requirement of having a living, breathing community of people to play with. Without community it will just be other people you can play with online, until nintendo shuts down the servers, and then you'll have put in all this work for basically nothing.
Yes, I would agree with those of you who pointed out the OP might not be a diehard competitive player, but I would argue that a healthy community of people to play the game with in person is even more important for a more casual tournament player than a more diehard competitive player. That's because a casual competitive player won't have the opportunity or motivation to drive hours and hours to play with someone in person (which the best way to play any smash game: sitting 5 feet from your opponent).
Furthermore, I put a lot of hours into Project Melee, and while there's still people playing the game, there have been many scares throughout the existence of the game that made everyone think Nintendo was going to ban streaming rights on all platforms, which would basically kill the whole community, therefore people's incentive to keep playing the game at a top level would go away, new tech which trickles down from the top to the more inexperienced players stops happening, and the whole experience of every player who's ever tried to actually improve at the game cheapens. You could say "wow, that's all a bit extreme", but it's true: when the competitive scene of the game suffers, every player who's willing to look up new tech and actually try to learn the game suffers, because it becomes harder to get information out there and to have a good community. Basically the game gets played less frequently, and the skill level of most players becomes handicapped.