It’s obviously an exit scam, all his previous loans detailed above are for a much smaller sum.
0.3BTC is obviously what he thinks his account is worth to exit. I dunno what Legendary accounts sell for but I presume less than 0.3BTC.
Sorry for your loss OP, genuinely.
I don't know what you define as an exit scam but if that was his intention from the start he probably wouldn't have paid the other loans back or made some repayments on this one. As for the account, I don't really know how much they go for these days but I'd assume a decent Legendary with a bit of trading history and feedback could get upwards of $1000. Taking out loans is probably easier and safer than selling your account though.
Is it just me thinking that if you take more than a couple of loans there is probably something wrong with you? What were the reasons given for all those loans?
Some people just do them because it makes their life a bit easier in the real world, and some people probably take them because they're a gambling addict, but I reckon most of the loans taken here aren't needed at all and people just do them to easily build up feedback by taking them out and repaying them straight away. Some people will do it for legitimate reasons (if you can call it that) because they want to appear more trustworthy and others will do it for the long con. Taking out small loans to gain trust is probably the easiest way to scam someone as you build up trust with the person bit by bit, slowly but surely and they're lulled into a false sense of security. I don't know whether that happened here or not but as I said before lending money, especially in bitcoin, is a very risky business and if they run into issues in the real world or the price rises as it has done it will become next to impossible to pay it back and the only ramifications for disappearing are a ruined account.