I agree that understanding what you are doing and what your data means/can be used for. I am not sure that DroneDeploy is trying to make anybody a surveyor anymore then Carlson, Trimble or other equipment companies are. I take DroneDeploy as a software that provides data management and data assembly solutions.
Each user is responsible for what they do with, and what they portray, the data and information that DroneDeploy provides. You will not be afforded the luxury of blaming DroneDeploy, anymore then you could blame Trimble, for any broken promises/lies given to your clients. In addition though, we all make educated/calculated decisions on the use of various technologies that we do not fully understand on a daily basis (cell phones, calculators, cars, computer programs, etc). We do this because we have seen reproducible results and outcomes from the technology. This is what allows me to use the data from DroneDeploy, reproducible, verifiable, results.
In terms of surveyors, remember that the title is meaningless. Being a registered and licensed engineer, I have seen college educated surveyors not be able to function if their equipment stopped and I have seen 60 year old's who are surveyors via 40+ years of experience calculate means and bounds in their heads with made up math. They both called themselves surveyors. I did internships while in engineering school with some major surveying companies. My work was almost exclusively in the field, and never once worked with a licensed professional land surveyor the entire time in the field (they did show up to talk to clients/contractors and check up on us (unless we were miles in a wetland :). These field guys I worked with were staking out foundations for multi-story buildings, highway on ramps, subdivisions, legal boundaries and more.
With all that said, be aware that certain states have specific laws about what constitutes a survey that must be conducted by a licensed professional (usually I am good due to the ability to conduct engineering surveys and studies as a PE). I would consult legal council in your areas, be very specific in your deliverables language and be upfront with your clients about what you are providing them.