This is not true. The "wallet" MtGoxAndOthers on walletexplorer.com is essentially a catch all wallet for addresses that are linked together from coinjoin-like transactions. As more and more 'wallets' use coinjoin like services they will most likely be linked to that wallet.

Walletexplorer.com really should use some kind of filtering to attempt to exclude coinjoin-like transactions when spend linking addresses together.

The address appears to be likely either belonging to F2Pool, or a miner who mines on F2Pool, however IMO the chances are probably greater that it belongs to the former considering that many inputs that it spends are roughly 25 BTC (the likely block reward that f2pool receives from finding blocks) and that it spends the entire amount of inputs associated with the address (e.g. does not give change back to itself, and spends multiple inputs), yet it receives multiple transactions from what is likely f2pool, and appears to spend funds to a large number of addresses, likely to their miners.