Yes, the people having less kids is an issue too, which is tied to many other factors, like people not investing into relationships that support them wanting to have kids. If you are finding relationships on Tinder, you probably aren't going to have many lasting ones.

I take myself for instance if I had kids the same age as my mums, those kids would be 5 to 7 years old now. Yet I'm not even married yet.

This is common now here too. people holding off but the thing is - at some point, it gets too late, it is too much disruption to the lifestyle.