renttoretirement purchase as starting point?

[Jaspreet Singh]

Hello, not sure if this has been asked before, however, rent to retirement (https://renttoretirement.com/) offers ready to go deals that are positive cash flowing. Wanted to know why people (besides doing BRRRR) would not use this method? New to investment and don't own any properties currently. Just curious if something to be wary of in that terms? Misleading numbers? appraisal issues with price and asking price? Sorry if the question sounds naiive.