Same exact thing can be said for golden retrievers and labradors. Honestly, most bred for purpose/ pure bred dogs.
Generations of inbreeding will do that to most mammals.
One of the healthiest dogs you can own is a mutt—ancillary (and anecdotal), but I found my cat in a dumpster as a kitten. She’ll be 10 in April and is still as feisty as when I found her.
https://www.fao.org/newsroom/detail/the-spread-of-h5n1-highly-pathogenic-avian-influenza-calls-for-stepped-up-action--fao-says/en