Well, it's not that people in quarantined cities don't have access to their online banking systems, I don't see the relationship between that and bitcoin price.

I see some people try to imply that the last spike in Bitcoin price was due to tragic coronavirus and people are panicking and rushing to buy Bitcoin, which I don't seem to agree to, people there are now facing a survival-related matter, it is not an economical fear where they need to find alternatives currencies or store of value, in fact, if you were HODLING some bitcoin and were in a situation like the people in Wuhan are in now, wouldn't you want to sell it so you can stockpile all the grocery, medicine and other important stuff? or simply not do anything BTC related?

I, however, agree to the fact that difficulty will be most likely be flat or have only a minor increase, in the grand scheme of things, China is the only ASIC Miner's manufacturer, and with things not going too well at the moment, everything from production to shipping will indeed slow down. It's a sad thing and I hope they will get through it with as little damage as possible.