Why it's very useful for developers to learn assembler, know computer at hardware level, know how instal Linux From Scratch, compile their own webserver/db/etc,

Why it's very useful for developers to learn assembler, know computer at hardware level, know how instal Linux From Scratch, compile their own webserver/db/etc, sysadmin stuff. Know that first. Then, if you choose, go use turn key systems/hosting environments.