according to @Martin Everson I read it to be safe so I can understand why @myshufflemix may have chosen this coin, I have done the same, but have only had 0.5 BTC to place there.
I said the below about USDC .
https://www.offshorecorptalk.com/threads/why-is-tether-considered-a-stable-coin.28000/post-119120