You would be happy about that I'd have thought, as the main cause of this is net migration.
I don't think he would be because CXR is a Little Englander who doesn't like foreigners, especially brown ones.
His problem is that he gets all his 'news' from GBNews. GBNews is designed to make people scared and/or angry in order to generate engagement. It is a private business after all and it requires an advertising revenue.
CXR doesn't understand this. He's a simple creature really and prone to getting carried along with slogans like "Defund the BBC" whilst not really understanding the implications.
What CXR won't know, because GBNews won't tell him, is that by the middle of 2029, the number of deaths is projected to overtake births, meaning net migration will be the only source of population growth. This means that if there were no immigration nor a huge increase in babies being born, the population would be shrinking.
"Good" says CXR. But the knock on impact of this would be very slow economic growth would almost inevitably slow bevause of an growing elderly population, and very few younger people about to care for them.