Dolan Seta carbon

I find it's more the lockring problem rather, I have stripped a Miche hubs because the lockring wasn't in contact with the cog properly.

^also true. ever since I used Dura Ace / Phil lockrings, never had a problem

Very possible, it did survive fun for 2 years though without fail, the wheel is only around a month old and didn't seem great quality.

got to agree here. Ive used a range of hubs/sprockets/lockrings.

I even once used a miche locking which are made of soft cheese allegedly. never stripped it.

once over tightened my track nuts and cracked one of the cone nuts but thats just user error

Possibly but it's odd that it would go now, never had a problem with this lockring in the 2 years.