If the management team at Jet2 thought there was money to be made operating at the moment flights would be flying I'm sure. Their track record is pretty good.
It's going to be interesting what people think of their resort experience when people get there, deal with any changes in government policy and have to come back through any potential lengthy border at the UK port.
If easyJet, Ryanair and Tui are all operating, it sounds like the market is already well served.