Please, that's just a sample, it was from a time where complaining posts where downvoted instead of being put in the spotlight.
There was a time in which people were complaining about games being too long. There was that time where Lee Sin was considered "trash" because he didn't scale well in the late game. There was a time in which "we got late" was the way to say "we won". There was that Feral Flare meta where its infinite scaling was relevant and then got the item removed due to balance issues. There was that time where the inhibitor turrets were so powerful it was a pain just to get one inhib down despite a 5k gold advantage. There was the lane-swap meta where the goal was to get towers down quickly to get faster into late game because that was the goal of their draft.
People were complaining that early advantage was irrelevant, that games were too slow, that they were becoming boring. They said that good plays weren't feeling rewarding because they had better scaling on the other side.
The game changes, the complains change. People always find reasons to their defeats. And usually, the scapegoat is the meta, or the scaling.