This re-designed contact page, as certain as we were of how bad of an idea it was, wasn’t a fire, so we let it through.
...it didn’t meet my internal bar for a quality product worth sticking my name on, and I feel like I’ve let down both the client and the end-users
If this was a bridge that might not stay up, would you have let it through? Or a high voltage circuit with poor grounding?
I wish our field had a higher bar in terms of professional engineering integrity, and just refused to do things we instinctively know are wrong. Commenters will make all kinds of excuses (money, someone else's decision, etc), but the world would be a better place.