That's precisely how God's house became the focus rather than the individual believer being the temple of God, and the body in total of the faithful the church of God in Christ.
When Jesus gave his sermon on the mountain was he indoors?
Concerning the upper room do you notice what's missing in the scriptures that speak of that?
There wasn't a whole congregation gathered there to worship. It was a sanctuary within which Jesus and his Disciples conferred among one another.
While when Jesus taught God's message he did so out in the open.
Home churches are examples of like minded temples of Christ can gather so as to not be impacted by the seasonal elements.
Nothing wrong with home churches. Nothing wrong with teaching outdoors. Nothing wrong with teaching in a warm dry building.
Jesus taught the multitudes outdoors because there were just so many and he was not allowed to do so in the synagogues.
What is important is the teaching, not the where.
What are you going to do if more continue to show up at your home church than you have room for?
Starting another home church is not always an option if you do not have some one who is qualified to teach.
You either turn them away or you seek a larger place to gather and teach.
Be careful that you do not condemn a local church just because they have a building and 50, 80, 200, or 500 attending.
Often these larger churches have the money to help the needy that a small home church does not.
Now I will agree that the larger the crowd the more the chance to err.
But, that is not always the case.