That's because that's how most of us feel bub....
And that makes it ok? DL apparently is disappointed/frustrated with an aspect of League yet can articulate his disappointment in a thoughtful and smart way, so why can't we? People are more willing to listen if it's not just inane ranting and harsh words, you know.
Revert every change made after season 5.... and go from there.
It also helps to have a realistic change. Again, Doublelift's video: "I think Riot should do xyz abc". Not once did he suggest mass reverts or anything. Again, ties back into getting people to listen: It'll spread wider if you have a more concrete solution that makes sense to do.
And seriously... you are on the LoL boards telling us to go QQ on twitter and reddit for RIOT to listen to us? What is the company ran by... monkeys?
Pssssst. Boards is small. So is Reddit. DL's video got widespread because it got noticed on a variety of platforms and got shared around the community on a variety of places. If you're only selling your wares in one store, you're not going to hit a mainstream audience.
Anyways, this post sums up basically why DL's video was successful and the average board post isn't: Clear, concise arguments. Thoughtful solutions that aren't calls for mass reverts and understanding that widespread viewership leads to more discussion about the topic. If you truly think your idea for getting things looked at is right, I suggest you step back and consider the size of boards and the impact our posts truly have in the community on a global level.