That's only because people wanted to reduce exposure to crypto today, and USDT is the closest approximation to that available for some exchange-committed funds.

apparent approximation

Isn't the entire point of it to be pegged 1USDT === 1USD? Obviously it fails at that by being backed by nothing like enough USD, but what does it being worth $1.07 even mean? Also, where do you sell Tethers given Bitfinex won't exchange them for USD?

You can't without difficulty, you have to convert them to BTC or ETH and send them to Coinbase or other reputable exchange then cash out in fiat, in a window where all three securities wallets at respective exchanges aren't in maintenance, network isn't blocked by cryptokittes, and you've passed all AML/KYC including possibly justifying where incoming has came from. There are a lot of people that will find cashing out to fiat very difficult hence why some are parking in Tethers even though they aware of the dubious nature, and thus tether is trading at greater than a dollar. Personally, I wouldn't want to touch tether even for a few minutes, as sod's law it would be my luck that Securities & Futures Commission of Hong Kong or Hong Kong police decide to act just at that moment I buy tethers (well technically the problem will be once it's on TV and value drops to 0).

doesn't the fact that its trading at 1.07 mean that tether doesn't have easy access to USD or an easy way to exploit the arbitrage. tether as a company can take USD and print tethers. so they could take USD $100, print 100 tethers, exchange them for USD $107 and walk away with $7 profit. i don't think people would even be mad if they did this. this is exactly what they should be doing to preserve the peg.

People have, in fact, been getting mad when it appears they may have been doing this because people are weird like that. (Though I don't think there's enough market depth for that particular Tether-related arbitrage to be profitable, unlike some of the other options.)

Buy BTC with tether, send to GDAX. Sell BTC for real USD

ETH is cheaper, due to transaction fees, although spread might be a little larger.

I continue to be astounded that the BitFinex boys haven't been locked up for the blatant fraud they've committed. If the feds don't get them, the Russian mobsters will.