I'm an original /r/mech user
It's fairly simple really
piR got banned because he was trying to exploit something within an older version of this forum's backend. He spammed a lot of unnecessary posts and started a lot of unnecessary arguments. This spamming and arguing carried over into other forums, getting him banned at places like DT and OCN's keyboard forum.
He started /r/mech after the /r/keyboards moderator wouldn't give him mod permissions saying essentially "I'm the expert here, you're just some kid" (what a mature, well thought out response)
His subreddit took off because piR posted a lot of good content, which got a lot of attention to his sub. In fairness, I learned a lot from him.
Once the sub hit about 10k subscribers he started a lot of the anti-GH lobbying, and since he had a decent reddit following, a lot of it worked. The "geekwhack" phrase was invented at this time.
Lately he only posts anti-GH propaganda, and tries to convert people to his side without giving an explanation why he's a "keyboard thug"
Also, he's the reason I joined GH. He told me "You're smart enough to replace smallfry, go spread the word of keyboard science!" so I made an account here. Look at my account creation date if you don't believe me.
I was nor am not nearly as great as smallfry and never will be. This is why I started the /r/mechanicalkeyboards weekly question thread, which piR stole from me after he realized why I started posting those threads.
And that's when I realized Ripster is a ****.
TL;DR: piR's a ****, that's why he hates us and we hate him. Don't listen to anything he says.