My first wheel (built without a tension meter) averaged 110kgf +9, -5% except at the bend which had me replacing it 12-13 years later without intervening truing apart from the roadside adjustments which wouldn't stick due to the two slack spots from the bend.

Jobst Brandt tested his book _The Bicycle Wheel_ by having his grade-school sons each build a pair of wheels without any other help.

It's not rocket science - about as technically challenging as adjusting front derailleurs, but a lot more time consuming because you have more interacting parts to deal with.