I think its worth understanding this "path" and then understanding that no one walks this route by choice. The usual way you hear about this is that someone matches to a Pennsylvania residency and they find out that they need to pass Part 3 before residency. Someone perhaps mentions to you that you can practice in Pennsylvania with just Part 3. No way, you say to yourself.
If you graduate, fail to match, but pass APMLE part 3 then possibly you could practice in one of those states. I met a woman doing nursing home work in Pennsylvania who had done the above and who was still trying to get a residency years later. She had been doing the nursing home thing for years trying over and over. This forum sometimes speaks unkindly of people who can't match or can't pass APMLE etc, but when you meet someone who hasn't completed a residency in real life the only thing you experience for them is pity/sadness.
Without a residency you can't board certify. Its likely more difficult to get malpractice. In a field where the job market is already meh you will be the least skilled person in the room. The only thing you can do is nursing home work and I'm not even sure how that works.
Every year there are people who don't match. Having interviewed some of them - none of them ran off to the states above to become full time nursing home podiatrists. Everyone I spoke to found a podiatrist office to try and stay in the game with and then went back to residency if they could.
Graduating and going straight into nursing home work to skip the 3 years and "get ahead financially" is not a viable path. We jokingly talk a lot of smack on this forum about things like ROI and the job. The ROI does not improve by skipping good residency training. If that's the impression we're giving people then we need to be more nuanced.