As Mitch Hedberg would say

They used to use it

they still do.

But they used to, too!

Being pedantic it is added detail. As native Americans did it, even if they still do it, they could have originally/historically not done so.

And also are there tribes/larger groups of native americans that did stop doing it? Then that statement is even stronger

Ok, so it wasn’t even an added detail. It was changing the topic to present day instead of the past. That’s even further from a correction imo