Could a capsule designed for ocean splashdown still land successfully on land in an emergency? The speed of the capsule is slowed to ~15 MPH, which seemingly wouldn't destroy the capsule.
I believe all capsules are rated for an emergency land landing, in case there is an issue near launch. If the winds were particularly unfavorable, it could result in a landing between the pad and the ocean, which would be bad. I know for a fact that Apollo was rated to allow such landings, and I believe Crew Dragon is as well.
Note that it is for something really unforeseen where this might happen. I don't think they would attempt a land landing unless absolutely essential.
See, for example, Teslarati article w/ recent Musk conversations. The retros could certainly combine with the 'chutes to bring the capsule to a safe earth landing.