Do people take those credentials home with them and continue using your account. 

Don't look are other people's pockets.

How do 5-7 people share food space, kitchenware, cooking time, etc?

This could be a huge problem, as the "the rent is too damn high" people will be extremely upset with huge surges in the cost of living, felt acutely in some major metros.3) 2027-2029 should see a return to a more normal inflation adjusted rent growth curve, with the caveat that if supply continues to remain relatively low, we could see national rent growth outpace inflation in these years as well, so long as interest rates remain high. 

However, I also think that a lot of people who set out to pursue this strategy miss the fact that it is literally a lifetime commitment to deferring taxes, which by definition means not realizing the gains.

Why would people be looking to rent your house?

It’s realy exciting to see how people reposition portfolios these days.

From what I've seen, typically two people doing a flip like this have different skillset so one person is doing different things than the other.

A sign doesn't draw people like it did 10, 20, 30 years ago especially in a more rural setting with less people driving by to see the sign.

Maybe they are trying to annoy people with low rate mortgages on purpose to get them to refinance (conspiracy theory alert)?