You can ask me my opinion directly instead of objectifying me and minimizing me...I promise I'll be civil. :-)
If you are asking my opinion I would say that of course doctrine matters. Doctrine is there because the Lord knows that it's the best way for us to grow and develop in his son's love. Doctrine is the guide, the framework, that the holy spirit uses to bring us up into spiritual maturity.
Now I'm equally aware that there are wolves in sheep clothing who may pretend to have the love of Christ but of course don't. They can exist as surely in a church that has false doctrine as well as those that teach Godly doctrine.
From the aticle I'm assuming that UCG thinks is is important what describes those who are part of "the Church that Jesus Built" and has a doctrine and that this would be a pretty important part of that doctrine.
So I'm asking for the UCG's (and presumably its members) doctrine here.