Make the connection here; it’s pretty simple. DIY, decentralization, doing things in-house — this is a part of the essence of holiness. Anything that frees you up to obey the move of the Holy Spirit, often in contrast to what other folks are doing, is a blessing from the Lord.
At the same time, you really need to keep an eye on what it is you are called to do. By the same token, you need to be aware of things you are not called to worry about. Still, as a general principle and a default approach, always assume that you need to be ready for DIY on everything possible.
In this day and age, we know that this will appear to isolate us from others. The spirit of this age is unbounded interdependence. It’s sold as being connected to other humans, as if it were a moral obligation. This is not what Scripture promotes. The proper attitude is that you start first with a focus on God and prepare your heart to follow Him alone on that narrow, rugged path of devotion. You avoid the Highway to Hell. Then, you accept in fellowship whomever you encounter on that narrow path.
This has nothing to do with being an introvert or extrovert. Holiness will isolate you from the mass of fallen mankind, but it will bring peace with God. The separation is painful, but the pain is not because of the isolation, but it’s because of sin. Our fallen nature makes us lonely because we are separated from the Creator, our Heavenly Father. We need to find our friendship with God first. Nobody else matters until that is settled. Without Him at the center, nothing else can possibly be right.
The only centralization we need is with Christ. Everything else calls for a divine decentralization.
DIY is anti-fragile, but the cost is breadth of message. God will take care of that part as needed.