60,000+ miles of riding on New England roads and I've never checked spoke tension, but I do suppose that it's been checked the few times when my wheels have been trued.
My last set of wheels (Bontrager Aeolus3 D3) needed one truing in ~25,00 miles of riding, they were destroyed when I was hit by a car.
I've got a set of 2010 Bontrager RXL's that I bough used, and have added >10,000 mile to, they spin laser straight.
Currently have 1,000's of miles on Bontrager XXX2 rim & Aeolus Pro 51 Discs, no truing needed thus far.
I did have a set of 2013 Bontrager RXL's that repeatedly snapped spokes, they were checked over & over and even when true, the spoke tension was all over the place. The wheels were eventually replaced under warranty.
I'm not sure if or why I'd need to check tension except if the wheels couldn't stay true or if I had problems with spokes breaking.