He's saying there's no such thing as fundamental value, and as a result, collectively pumping a stock to induce a short squeeze is no different that spotting an undervalued company.

Anyone with half a brain should be able to recognize that GME moving from a 900m market cap to a 30b market cap in a few weeks is completely nonsensical.

I mean, he literally just said that money is a construct, and maybe implied that fundamental value is too, which is sort of a reductive argument, but going from that to "market manipulation" and "there should be no real rules" is a strawman argument.