Yes it speeds up weight loss but you still need to be careful with total daily calories (in the time window you consume them). Excess calories will still become fat but it's harder to overeat in a restricted time window, at least for me.
In this fasting method, you may think that we can eat the three meals in the two times but in reality we can't eat much as you for everyone else as well.But it may not help you to lose weight only with diet it also should be followed by our daily workout routine so more calories will get burned from our body fat.
There were videos that I've watched that you can eat as much as you can as long as you are in the eating period. I understand it now why calorie counting/intake is very much important to those who want to reduce their weight.