Headline doesn't match the story...
"... to fly alongside the F-35 fighter jet and ultimately replace the F/A-18 aircraft."
F-35 bashing is a cottage industry. The Navy's "never" been a one-plane-does all set-up. In WW2 they had fighters, torpedo bombers, and dive bombers. In Vietnam, at different times they had some combination of F-8s, F-4s, A-4s, A-6s, and A-7s. The purpose of the F/A-18s was to replace F-4s and A-7s, being used with F-14s and A-6s. Had the F-35's development been less troublesome, it would have come into the fleet after the F-14 was retired but before or around the time the A-6 was retired. So about 20 or 30 years from now something Gen6 will probably replace to F-18. That's the way it looks from my desk chair anyway.