Yep - being totally honest, I was expecting to have seen a big spike by now. No idea why it's going so well (so far...)
Delta burns fast through the population like a standard bug. Not saying it's not dangerous - it clearly is - but it burns fast and then hits immunity.
I'm convinced that's what we saw.
However, we will probably have very similar with variants of covid from now on, this is likely how they'll act. It's what the aim was - you turn it into a standard bug that comes and goes and doesn't overwhelm the NHS. With boosters to come, that gives vulnerable groups more protection.