Well, if its proper technique it should result in a good high C! Or if it produces an acceptable result it must be an acceptable technique! Right?
I will put it a different way: You are singing a series of arpeggios. Beginning from the low range and going up by half tones until you get to the high C. Every scale up to high B natural (si naturale) is perfectly balanced. Then you get to the high C arpeggio and it cracks. Do you continue with your technique or do you look for a different approach to the high C?
Well if the technique is not working for the high C, I'll make a change to get that note! Besides, there are those that say that there is a different register at play at high B.
Yet the high B worked perfectly with the standard technique. So would you cheat a little just to get an acceptable high C?
Ain't nobody got time for real training!
Ain't nobody got time for trench work!
Ain't nobody got time for things that are difficult in the beginning!
Ain't nobody got time for the vision that something that was once difficult, with real invested and focused practice, can become easy.