I really hate how many misconceptions there are surrounding tier lists. No, the character who can pull off the most high level game exploits in competitive Smash is not the character you'll see dominating any matches you play. And there's a simple reason for that: tier doesn't affect casual play. At all. I hate how the tier list has been manipulated to make someone feel good about their main while trashing on the low tier characters like, say, Kirby. Oh, I'm certain I could beat your Inkling with my Kirby! Skill is all there is. Not tier. That list of numbers is irrelevant in anything but the highest levels of competitive Smash.
...Wait, did you say Brawl Meta Knight? Uhhh...fine. There's your exception, folks.
I'm not sure quite sure what you're angry about here. "tiers don't affect casual play" is true and I don't think anyone would disagree with you about that, so what's the issue here?
Good job devaluing the entire of competitive Smash by acting like it's only about "high level game exploits" when those rarely actually get used (outside of wavedash in Melee (one game) which isn't even that "high level") and instead competitive Smash is focused around how well people understand and can play the game, just like literally every other fighting game in existence. Let's do a quick quiz:
If a player wins a Competitive Smash Match, is it because:
A. They know how to abuse "high level game exploits".
B. They're just really good at the game.
C. Even if they use these "high level game exploits", that doesn't mean they take a lot of skill to learn, and correctly use during a match
D. All of the above.
The answer is B, but C is still a valid point, even if not an actual answer to the question. If you practised hard enough with Kirby (who I presume is your main), you could win a local without having to use these "exploits", because they're not what's important to winning.
The Tier List hasn't been manipulated to make players feel bad for maining low tiers? If you take issue with the fact that you're main is frequently ranked as a low tier, then that's a you issue, not a tier list issue. There is nothing on the tier list that says "you should feel bad for maining someone in this tier".
Out of curiosity, do you have a friend or something that acts like the person in your post does, and you've decided to take your frustration on them out on tier lists? Just a thought I had. I'm probably completely wrong, but that's the vibe I'm getting from this post.
Anyway my opinion on Competitive Smash is that it's cool to see people treating Smash like what it is, a fighting game. After having played a few Free-For-Alls recently, it's nice that people have taken time to test out and then implement a ruleset that focuses on skill. I don't think Smash would have lasted as long as it has, nor become as popular, if it didn't have a competitive scene, just look at Melee, almost 20 years later and that game is still heavily played by many people. Competitive breaths new life into the game, and I'm thankful for it's existence because I don't think I'd enjoy the game as much without it.
