[Nitrolo]

I'll guess that this is referencing asylum seekers and migrants.

I keep seeing this argument pop up all the time online and in person, but it's never really made sense to me. Population growth in most European countries is lower now than at many periods in the past, yet we were able to house rising populations somehow.

Do people think cities like Berlin and Paris just got plopped down fully formed at some distant point in the past, together with instructions reading "Population: 3 million max., never exceed or add anything"? They and their infrastructure have grown over time as the population has grown. There's no magic maximum population limit that every city in the western world has just happened to hit right in the last 20 years.