RickH wrote:

Real hardwood 2 1/4 inch strip oak or maple will hold up better to any
pipe breaks. The wear patina is very nice after a few years too.
Once the masonite substrate of Pergo gets wet it will balloon out and
delaminate badly. Hardwood will simply separate a little but still
look great if it was nail installed once it dries out.

I had a fitting leak on a new dishwasher in my house -- very small amount
of drain water, but I didn't catch it for two weeks when my real oak floor
had warped a little. About 4 boards wide and about 2-3 inches long. Not
visibly noticeable unless you get up close (on your knees), but you can
feel it with sock feet.

I suspect it would be possible to sand it out, and over time it seems smoother.