Except bitcoin isn't a stock.
Right. And stocks are NOT divisible so if you want to buy Apple you need $400+ for one share. While this does not cause most investors problems, it prevent some purchases.
Bitcoin is already divisible. It does not need to be split as it can already be split by the user.
The price increase effect is due to investor psychology, not due to some tiny investors being able to buy $200 worth of shares. Even if a 100000 people bought 1 share each because apple split from $400 to $200 it wouldn't have a very significant effect on AAPL.
I think OP has a good point.