He basically seems to have disappeared and is providing no leadership at all. Whether that's caused by COVID or not I have no idea, it could well be as he had a very serious case so could well be suffering after-effects.
He may well need to step down, but in my view that should be soon before more damage ensues from his inaction and lack of leadership.
If BoJo was suffering from long term effects we would definitely know about it, he'd make sure of that! Or should I say Cummings would make sure of it! No the reality is BoJo is suffering from being a utterly crap PM, making dumb decisions and trying to hide from the consequences.