We find this to be true. 

I would focus on coaching that helps you become a local expert and build relationships with sellers, not try all the BS marketing techniques.

Just a few counterpoints - The home office deduction being a red flag has not been true for over a decade.

That’s true in our neighborhoods anyway, but we favor cash flow so it works out fine.

That isn't 100% true.

This is especially true if you're trying to buy in the best location possible.

This is true but the answers are sometimes wrong still 

AirCover is not a true insurance policy; it only provides coverage for guest-caused damages, and even then, compensation is at Airbnb’s discretion.

Just make sure if you're paying that much for your coverage you are getting a true short term rental (commercial) policy.

Quote from @Robert Rixer: With on market deals like this, there are two scenarios: 1) you see something that no one else sees OR 2) everyone else sees something you don't That is true