Learning how and why vs Docker and automation.

I guess the question is: Is it worth learning the manual how-to setup and config or just learn Docker or and equivalent? Seems to me that everything is going automated. For example: The proxmox scripts that everyone seems to use. Anyone can copy and paste a command but do the know how to do it without a simple cut and paste. I personally have been trying to do most of it w/o scripts or docker. Yes there is a lot of trial and error but when it works i feel good about it. Most will say it's a time thing. I get that. I'm just looking for opinions on weather I should worry about doing things the long way or get with the times and cheat the system.

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