I suspect that Tucker Carlson, who is well aware that he's getting very high ratings right now, thinks he can goad President Trump into doing something before he (the President) is ready to do so.
There is lots of time from now until the election (130 days to be exact, four months and eight days). If we go back 130 days from today, it was February 17th, which is when the Wuhan Coronavirus crisis was just beginning to really take hold.
A hell of a lot can happen in 130 days, as we have seen. The reality of what mob rule means will only become more obvious over time. President Trump knows the election will be won in the last two or three weeks before election day.
He doesn't even know for sure who he's running against. There's a fairly large chance the Democrats will switch out Joe Biden for someone else. The target has to come into view before he can do battle against it.
Totally agree with your post.
Let us see if the Democrats really nominate Biden—and then keep him as their nominee until October.
The President should not make his major PR push against Biden until it is too late for the Democrats to do anything about it.