> One specific area that KitSplit talks about in-depth is their proprietary vetting system ...
That should have been where you stopped reading and walked away. From my experience, let me tell you what "proprietary" means: A. we have no process OR B. we use what everyone else is but want to stand out from the rest so we lied to you.
How do you vet trust on the internet? Think about how hard it is to steal a rental car. Do they have a magical proprietary process? No. They take all of your personal info and use that as collateral against you should you decide not to return the car.
Bottom line, and I'll happily take the karma hit: you're a sucker. And I'm not being mean, but driving the point home. You believed some rent seekers bland promises of magic fairies and pixie dust in order to secure a quick buck. You know the old saying: If it sound too good to be true...