Very amusing!
Will all due respect, your "STAY AWAY" warning isn't really specific to Savant. It could apply equally to all luxury, professional smart home automation systems including Crestron, Control 4, ELAN, Savant, and a few others.
Having said that, I agree with most of what you said and your frustration, from your perspective; especially inheriting and not being the original purchaser of the system.
I started my current business www. DoItForMe.Solutions as a response to this exact scenario - overpriced, locked-down, legacy systems that don't trust or value their own customers.
Along the way, I discovered it is not so simple. There is a place for these systems and their value is not the (overpriced) cost. There are a class of customers, truly the "luxury class", that find them excellent (when installed and supported properly). Of course, you and I don't own $1 million to $25 million dollar vacation homes with 20 tv's and 100 in-ceiling audio speakers throughout the home.
Just as a Pinto, a BMW, and a Lamborghini are all transportation, different strokes for different folks, as they say. You don't knock a Lamborghini as an overpriced car pool vehicle that costs a fortune for even an oil change.
The problem is that these high-end systems are often sold by pushy salespeople and builders to customers that don't understand what they are buying and probably aren't the best fit.
That's why there are only a handful of really good installers and custom integrators that know how to sell and support these systems and their clients, while there are tons of "B-Team" hacks selling the gear for a quick profit and unable to even set them up properly in the first place.
DISCLAIMER: I am not soliciting business or trying to self-promote, just educate on this issue as it is not as simple as a "classic rip-off" scenario.
In the case of Savant, they don't build and sell their own IP Cameras or NVR system (at least not yet), but unfortunately their integration with 3rd party systems is not very good. They primarily assume clients use classic legacy security camera systems like Hikvision, Dahua, or similar and only recently upgraded from MJPEG streaming to H.264. Their "generic camera" profiles (aka "drivers") only work with a few 3rd party devices and often require tweaks or adjustments to use.
So yeah, your ability to connect into Savant will be very limited.