I'm an agent, an investor and a wholesaler. Some places like Illinois for example require individuals to be licensed with the state in order to wholesale more than 1 deal per year.
The biggest issue is most of these "gurus" that get new wholesalers involved teach them to be deceptive when they approach realtors.
To anyone I've ever helped get started I've taught them that transparency is number one when you're looking to work with an agent.
I started off as an agent and I used to HATE wholesalers. They were taking my investor customers away from me and keeping me from getting a commission. Most wholesaling firms will make an agent put their commission on top of the deal so why would your investor do that when they could cut you out of the deal. Luckily my customers were pretty loyal to me but you get the point.
I couldn't beat them so I joined them. I make way more money wholesaling and investing then I ever did as being just an agent.
Just be transparent if you plan on working with a Realtor, you know how many times they have a "Buyer" or "investor" calling them or emailing them that " I NEED TO FIND DEALS ASAP" only to find out it's another wholesaler trying to get deals out of them. Not to mention they have a dozen other agents just like you busting their tail for them.