[Notwithstanding]

These numbers make no sense.

If 70 million adults in the US have participated in "house church" religion, the term would be widespread and widely understood.

I wish all people seeking to know Jesus better and lead others to Him well. But hyping the popularity of this idea is not that helpful.

[VOA]

If 70 million adults in the US have participated in "house church" religion,
the term would be widespread and widely understood.

I think the term is well-known, but the concept of it being a fairly
sizeable phenonmenon is just not grasped by the MSM and even some
more conservative media outlets.
For a fair number of Americans, if it isn't on TV, it doesn't exist.