Because it has nothing to do with the way a mathematical equation works. You can say that with a reverse split. When a penny stock reverses, the first day of trading it opens up the exact same amount as when it closes pre split. Mathematically it is the same, but they all dump big time post reverse split.
It has to do with the fact that the lower the stock, especially triple zero's trading at .0001 x .0002, are diluted pigs and have a small chance of moving up and a better chance of reverse splitting. That poster's goal is to make a 50% gain on triple zero's 3 or 4 times a day.
If you see a company you like that you think has potential to go up, why does it matter what the share price is ?
Have you even looked at a filing? Have you noticed the difference in the outstanding for a stock trading at a buck vs a stock trading at .0001?