As I understand it, the lowest cash games on Global Poker used to be 4NL, and I actually think, this was pretty reasonable. Online poker is almost 20 years old, and there has been inflation, so 2$ is an incredibly small amount of money today for a cash game.
But I think, starting at 10NL is taking it to far, and it certainly does not make the site more beginner friendly. Learning cash game poker at 10NL might end up being rather expensive, and you need a starting bankroll of at least 300$. It is however good for winning players, because 10NL will presumably become softer.