When I look at the Red Tracker I feel like they have been posting at least as much as they used to. I notice that many of the posts on the front page have posts like "We hate Cassiupeia", "We hate Lee Sin", "We hate Fizz", "Give us more ward options", "Change the Baron/Dgragon buffs", "Leaver Buster punished me unfairly", "I want this skin for X champion", "Here's an improperly designed bug report", and so on. If all everyone did was complain on my forums, I wouldn't bother interacting with them, but that doesn't mean I wouldn't read what they say. There's a post on the front page now that complains about Fizz but also says absolutely nothing other than "How could you let him stay like this?" without so much as pointing out specifics of what they don't like or even suggesting a change to make him more fair. People like that complain either for the sake of complaining or have never heard of backing up your claim with examples or arguments.
The only real way they can respond to that is with an arbitrary answer meaning "We're testing some stuff out internally" which would never satisfy anyone that had enough reason to make such posts in the first place. I'm sure if Riot wasn't so closely watched by the public eye that so often twists their words and tries to be problematic, they'd say stuff like:
"The last thing we want to do is change Cass' passive mechanics each week to see which one works. Let's try this one out, we'll change the numbers from time to time based on what people are giving in ACTUAL CONSTRUCTIVE FEEDBACK. It makes sense to us that a poison based champ could hurt her enemies more if they've been exposed to more poison, thus the nature of her passive. We also had to note that, in instances like Veigar, if we gave her the same base stats without considering her ability to grow more powerful the longer a match goes on, she'd undoubtedly be able to win otherwise even trades at nearly all points in the game. Her base stats will be decreased slightly to compensate and if it feels like she loses all trades early regardless of details, then we will up her base numbers a bit. If it feels like her mana costs are too limiting, we'll see if lowering the costs or adjusting certain mechanics would give her more mana without making it a negligible factor, and the same applies for damage. We're not going to flip-flop like so much of the community asks us to, but they must understand that we have a team of people who agree that something had to be changed to bring this champ up-to-date"
TLDR - The average threads that get the most attention are simply complaining about something without any constructive aspects or details/are idiotic. As a big fan of this game I will admit that I do not like the community as they don't act the way they do in real life (or if they do they never graduated high school and learned people skills). I only want to talk to competent people that are able to take an answer and not rip into me about how their ideas are better.