Just curious, why are youtube links case sensitive?
Exponential expansion of their available link catalog without links becoming too large
For example:
youtube.com/abc
youtube.com/Abc
youtube.com/ABc
youtube.com/ABC
youtube.com/aBC
youtube.com/abC
vs youtube.com/abc or ABC or aBC etc.
6 vs 1 with that small example.
Now multiply that over the various combinations of letters and numbers and symbols.