It exists for the rare situations its necessary, but is hidden away from the average user who won't need it.
Which from a backwards compatibility point of view, is fine. If you don't want it you can just not use it.
After 10 years they won't be able to either xD There's tons of things hidden deep in Windows that they're too afraid to entirely remove. Such is the hole they dug by promising software backwards compatibility at all costs.
Which from a backwards compatibility point of view, is fine. If you don't want it you can just not use it.