Unfortunately, it's not.
Low*s is a publicly owned company, WP doesn't have a controlling share, It's mostly private shareholders and employees themselves.
Like I said, it's most likely a contract that Low*s and WP made years ago, and Low*s can't back out of it. Yes, the Water Heaters are junk, but they have 2 choices; Sell the junk, or stop selling water heaters. With a contract, there is no 3rd choice without serious financial ramifications. Shareholders wouldn't agree to that, ever. They would say "well, can't they just start making better water heaters?" ... and here we are, at this catch 22...
No company makes the perfect decision 100% of the time. Hell, they're doing better than most if they hit 50%. Low*s is doing a good job in that they tend to take good care of the customers. That allows a lot of dishonest people a chance to take advantage, but it also puts the customer first. If low*s corporate made a stupid contract with whirlpool, then that's 1 bad decision that does hurt some people, but it's nothing compared to what other companies do.
Example: Home D*pot firing people who have been there for 10+ years just so they can bring in fresh blood with smaller salaries. Yeah, I would rather be associated with the store that sells crappy water heaters.