Not OP, but I think this is a pretty narrow reading of their statement. Personally, I read it to be more about value and community dynamics.
Institutionalized religions often are very explicit about their (supposed) terminal values and arrange social situations to explicitly work toward or reinforce those values. I believe OP is pointing out that secular groups (at least those within view of OP's demographics) mostly fail to have explicitly defined value systems.
There is a difference between why we perform and action and the reasons we give for performing the same action [citation needed]. I think OP suggests that religions have structures useful for cognating about the former more sharply than secularism does.