At a time of national emergency and crisis, the official elected to lead the country should be communicating with the country, and isn't.
Other leaders are, so should he. It's part of what leadership is.
As has been said, if he can't, he shouldn't be leading.
I suspect he is being insulated. The Housing Minister can say 'I'm not the Health Secretary' The Hime Secretary can say she isn't the Foreign Secretary.
The Prime Minister has no where to hide, he should be able to provide answers and as has been seen on the few occasions he has faced Keir Starmer, without a script, without being able to pre record a statement, he is exposed for exactly what he is. A self serving chancer with no interest in serving the nation, no interest in fulfilling his duties, just a desire to hold the title of Prime Minister and enjoy the perks that come with it without any of the inconveniences of having to be held accountable