I think the point was that he didn’t know how hard to nip it up to begin with.
Nipping up = tight enough to do the job, but nowhere near tight enough to strip the threads.
If you’re using the correct sized tool for the job, nipping up stops where you’re having to move your the next segment body to tighten it any further. I.e. if you’re having to start involving biceps and triceps when nipping up a 2mm bolt you’re way beyond nipping up.
We both know how to do it, but we’ve probably learnt the hard way in the past. If it saves them the grief, stress and expense of stripping the thread of an expensive item using a torque wrench, then thats surely a good thing.
Thus they learn and save their kit getting fecked. Win Win.