Telling people that being part of the local church is optional for the health of the Christian, is like telling a married couple they can replace living together with being friends on Facebook to grow closer and become One as God intends.
Good insight. And as we progress through Colossians, we are seeing that God is at work to renew us as a body in the image of the creator, conforming us to Christ. This new man being renewed is a corporate body of believers as the subsequent commands show. Let’s show Christ is all and in all (Colossians 3:11) by not treating our involvement in the local church as an optional thing.