The prices have gone up due to the pandemic. I don't know if it's a temporary measure but I sure as hell hope it is. It makes sense though attempting to dissuade passengers at the moment in the name of safety. I hope that when things "return to normal" that the prices will drop pretty quickly for Joe Public.
What does "due to the pandemic" mean? Covid, in of itself, doesn't directly cause a price rise.
I'm guessing that the few passengers they do have are, by definition, for essential purposes, and so are more of a captive market thus charging rock-bottom fares makes no commercial sense, especially with loss of (presumably) nearly all top-end Business Premier revenue. And the latter won't be returning in any great hurry, so "bottom tier" prices must rise to compensate, when leisure travel (eventually) gets going again.