I liked what John Crace wrote about it in The Guardian:

"But one thing was notable by its absence. Although it’s her job to be apolitical, there was no mention of the government’s efforts or requests to follow official advice. Her Maj still hasn’t forgotten how she was used, and made a fool of, by Boris Johnson over the prorogation and pointless Queen’s speech. In Boris, she doesn’t trust. But then who does?

The subtext was unmistakeable. If the country was to survive, it would do so through the collective resolve of its people, not through a government that had been slow to react and was still making promises it did not know it would be able to keep. And with that she faded out after little less than four minutes.

Throughout, her face remained more or less expressionless – inscrutability to hide the pain – but she had done what was required. Simply by being there, she had shown she cared. She had provided the clear moral leadership that many politicians have failed to provide. For some people nothing she could have said would have been enough, while others would have taken comfort. Most people probably wouldn’t have cared much either way. But it was a necessary rite of passage. And a tough gig when underneath you’re just as scared – if not more so, given her age – as everyone else. There’s no disguising it: the Queen’s a class act."