Well I guess if it will never be driven on the street you can do whatever you like, however ill advised it may be for anything else. Drag cars can get away with sketchy geometry because all they ever do is go straight, and that’s easy. Unless you get out of shape, but hey, not my problem.
As for the steering arms, he said he “did some serious strength testing to make sure they would never fail!”. For that to mean anything at all it would mean either doing destructive testing or having the welds checked beyond the “looks good to me” level. Otherwise it’s not “serious strength testing”. From an objective standpoint, you wouldn’t do “serious strength testing” on the arms you were going to use, because serious testing is destructive.
It’s already been said, but doing the front steer conversion RIGHT takes planning and custom parts. Doing it EASY means bad geometry. Drag cars in the past have largely done it with bad geometry. If it never sees any street time at all, knock yourself out. If you’re gonna put it on the street on the weekends like that, well, hopefully it’s just your funeral and not anyone else’s.