Many CRM vendors, like many website and vehicle management tool vendors, have a tendancy to overpromise and under-deliver.
Before leaving my last dealership, I intentionally brought in 3 CRM vendors for demos since I was only masterful with one, just to see what else was out there.
Since, I was able to assist some friends that had two of those three vendors. Upon seeing first hand, nothing like the presentation or demo.
Even if one is able to understand how to set it up, will it work how it's supposed to? More importantly, will the end users easily understand how to use it according to their responsibility, sold deals may get locked if you're lucky enough to have quality consistent pulling from the DMS, how easy is it to pull reports? I do agree there many things not easy to do in some CRMs.
I do believe a full time person for maintenance is essential though, especially if it's mulit-rooftop. Even if the tool can be set up properly while it's implemented, processes usually need to be adjusted afterwards. Also, the CRM tools are designed to do so much, and must integrate with so much (DMS, inventory, websites) that it's always an ongoing project.
Just as someone is needed to post specials on the dealer website weekly, monitor inventory feeds to and from vehicle management tool to website to vendors, someone is needed to know the CRM tool for adjustments, glitches, and full utilization. However...
This is where the dealership needs to decide who's responsibility it is for such work but most still don't see beyond the current sale being worked in the showroom. If a CRM tool is properly utilized to even 75% of it's capacity, that salary should be easily covered many times over.