"Recent polling shows no clear evidence of a religious revival among young adults"

It does suggest that the decline has stopped. Maybe also true in other western countries.

It is what I expected. Given stable rates of loss religious belief and non-religious people converting (ignoring conversions between religions) there will be an equilibrium.

It still matter what religion people follow. One of the big changes, especially in the US, has been the growth of evangelical Christianity (often Biblical literalist and right wing) at the expense of traditional big denominations.

I'd argue because religious stupidity these days has increased to such a high order that in many adherents, its in the not even sane point to be even debated. Rationalists also haven't yet committed a few mass genocides and taken over countries, which is the bare minimum to be taken seriously among religions.