Why not always go with 203K Standard or Streamline Loan?

[LaQuan Bates]

So im very new to Real Estate Investing and am particularly interested in Multi-Unit properties. I purchased the book "The House Hacking Strategy" which was highly recommended for beginners like myself. In the Finance chapter it broke down various types of loans that a first time Home Owner can acquire for Multi-Family units and explained the difference between standard FHA Loans, 203k Standard FHA Loans and 203K Streamline Loans. So my question is why don't all first time House Hackers/Home Owners just obtain a 203K FHA loan for renovations and force appreciation into the unit while also making passive income off the additional units? Again im new to RE investing so I dont see any downsides to this. Any Insight would be appreciated! Thanks Everyone!