I am curious... what are the baseless accusations?

Muddafudda certainly made his own shitcoins ... everyone knows this.
I wasn't aware R3wt also made a shitcoin, but he did... amp, or something like that.
He also ran OpenEx, which failed, and a lot of coins were 'lost'.

They publicly claimed they wish to ddos other coins, and extort devs illegally for money, if they don't comply. It's in the thread, posted by the members themselves.

I'm not sure what part of his post you consider false. It's all in the shitcoin thread itself.