FlareBlitz
Relaxed nature. Loves to eat.
Going to massively co-sign Capefeather's post. I really don't have much else to add, except for this.
The purpose of tiers in any community oriented around a competitive metagame is to sort the given elements in that metagame into broad, easily understood categories. It's not to say "Oh, if you don't use Meta Knight, you'll lose". Rather, it's to say "Out of all the characters in the game, Meta Knight is best suited to perform well in this current metagame".
In fact, Smogon's tiers don't even make that value judgement. They're based strictly on usage, except for the Ban tiers. What this means is that people don't use your (incredibly bad) Primeape set because it would simply not pull its weight on any team. You mention stagnation, but often that's simply not true. Look at Heracross, a Pokemon who at the dawn of D/P was an absurdly dangerous sweeper. Now, even though Heracross itself has not changed at all, it's in deep OU, and even in danger of dropping to UU, simply because the current metagame is not favourable to it. As an example of the opposite, look at Tentacruel. Back before Latias was OU, stall teams were having massive amounts of trouble with Nasty Plot Mixape. But then, more and more of them started using Tentacruel, which could both solidly counter Infernape and set up/absorb Toxic Spikes, and its useful niche in the metagame quickly became apparent. And look at Magneton, which was NU just a few months ago. However, during the Yanmega metagame in UU, a few people (such as myself) realized that Magneton had massive potential as a steel-trapper with all the Registeel running around, and it quickly rose out of NU and into UU.
I don't want to write too much (I think I already have) but simply put, the foundations of your argument are not based in reality. Pokemon can and do shift tiers all the time, and people can and do think outside the box while still respecting the usefulness of tiers in organizing the metagame into easily understandable chunks.
The purpose of tiers in any community oriented around a competitive metagame is to sort the given elements in that metagame into broad, easily understood categories. It's not to say "Oh, if you don't use Meta Knight, you'll lose". Rather, it's to say "Out of all the characters in the game, Meta Knight is best suited to perform well in this current metagame".
In fact, Smogon's tiers don't even make that value judgement. They're based strictly on usage, except for the Ban tiers. What this means is that people don't use your (incredibly bad) Primeape set because it would simply not pull its weight on any team. You mention stagnation, but often that's simply not true. Look at Heracross, a Pokemon who at the dawn of D/P was an absurdly dangerous sweeper. Now, even though Heracross itself has not changed at all, it's in deep OU, and even in danger of dropping to UU, simply because the current metagame is not favourable to it. As an example of the opposite, look at Tentacruel. Back before Latias was OU, stall teams were having massive amounts of trouble with Nasty Plot Mixape. But then, more and more of them started using Tentacruel, which could both solidly counter Infernape and set up/absorb Toxic Spikes, and its useful niche in the metagame quickly became apparent. And look at Magneton, which was NU just a few months ago. However, during the Yanmega metagame in UU, a few people (such as myself) realized that Magneton had massive potential as a steel-trapper with all the Registeel running around, and it quickly rose out of NU and into UU.
I don't want to write too much (I think I already have) but simply put, the foundations of your argument are not based in reality. Pokemon can and do shift tiers all the time, and people can and do think outside the box while still respecting the usefulness of tiers in organizing the metagame into easily understandable chunks.