He PAID for it though

He paid for a company that came with certain history, obligations and reasonable expectations of the blockchain community it led.

If some other party bought 50 million worth on exchanges would they have their steem soft forked away too?

I doubt it. More likely would be just forking to a new chain and leaving him behind which would also likely be a loss for him, but who knows. This is a hypothetical that did not happen.

Hypocritical to fork away Neds steem and not the other pre miners like Freedom, Bernie etc. just because those people are voting like you

Where are the videos of Bernie or Freedom promising to use that stake to develop the ecosystem? Where is the evidence that Bernie or Freedom rigged the mining setup to spend almost no money while attempting to evade regulations when doing a fund raise? Where is the history of that stake already being subject to possible remedy, by fork, of failure to properly support the ecosystem a year or two ago, something Justin could or should have known before he bought it? (And, unless we take him at his word, which at this point I'm not sure why anyone would do, we don't know that he didn't know.)

None of that exists. It isn't the same situation at all.

The Steemit ninja-mined stake is unique. The community considered (though ultimately decided against) forking controls over it when Ned was still in control of Steemit and then considered them again (and decided in favor) after Ned sold Steemit to Justin. Nothing really changed here with the sale of the company. Justin got just what he paid a heavily discounted price to get, which is (a company with) a weak claim on stake on the blockchain with historical and practical encumbrances against it.