1. Windows 7 was liked by gamers - the same gamers who can run most of the same games on Linux now (1700 games on steam now run on Linux natively)
2. Microsoft want you to use PowerShell (if only they could release it without bugs in it). It is not hard to delete a directory but maybe it is above your skill level - have you thought about a console instead.
3. Linux already has far more optimisations than Windows 10 for games.
4. You have a choice.