I mentioned the reasons before.
What you are suggesting doesn't scale. It doesn't work well for large orgnizations. It also hinders smaller ones because they never learn the skills to do it more effectively.
It is a learned practice. It does take effort but the rewards are many.
Yes I talk about this as so what of an authority. I have written on this subject, measured outcomes, created manuals and guides and trained people.
If you want good talent it isn't all going to be in one place and we have the technology and tools to work with people anywhere and with some guidelines and rules: anytime. That is a huge win.