Why i front squat so underrated?

Look up ankle mobility. I have long femurs, but no longer have that problem.

The real answer is because you can move more weight on your back vs on your front (more muscles used etc). The more weight you can squat front or back the better you'll be able to finish your heavy clean. I doubt many weightlifters clean as much as they 1rm back squat, so the ability to squat more weight makes the clean easier.
It has nothing to do with front squat being more "taxing" more weight = better, and back squat = more weight than front squat.

Don't ask me. I front squat the same weight that I high bar squat. On the high bar, the technique fall apart when you increase with too much weight. On front squat you'll just lose the bar.

did it help you stay more upright? and what stretches did you do specifically?

Core strength nigga

because the bar position is very close on the high bar squat and front squat.
front squat, however, is more core limited because of the longer lever arm between the bar and the spinal erectors.

Additionally, with the frequency of building up to moderate to heavy cleans, they get plenty of time under the bar in the FS position.
however, this is for exhibition and development of the sport lift.
for the purpose of developing the muscles most involved in the clean and the snatch, the high bar squat fits the bill as it does exactly that while being less limited by the factors that prevent the FS from being the primary source of squat volume - the mentioned core strength limitation - while also emphasizing the more upright torso position demanded of the snatch and the clean, which would not be achieved as well by the low bar squat because it would be more liable to develop a movement pattern in the squat that would not be conducive to the positions obliged in the olympic lifts

the high bar squat is simply the tool that best fits the bill for their sport, just as the low bar squat is the tool that fits the bill for PL. competition and sport specificity is absolutely relevant.

If you have to ask if it helps me to stay more upright, you already know your problem. Any stretch that allow you knee to surpass your toes.

because an old texan geologist with a mediocre powerlifting total who only trains the easiest demographic to train does not parrot it as the best lift, and autistic internet communities full of incels have not taken a front squat myopic routine and shoved it down everybody's throat and made it into a meme

Because the are really hard to do in a smith machine.

Because you're weaker on front squat than you are back squat and I am very insecure in my masculinity.