First of all cameras are no longer a deterrence. Look at the videos posted here, and elsewhere. Most "perps" don't give a rats butt about video cameras.
Again Ring, Nest, Arlo, Wye, et al, will give you nice pretty pictures, but when the rubber hits the road and you want/need to know who did what you won't know who and, if you're lucky, you might be able to see what as long as it's not night time. Think about it, when does most of the bad stuff happen? Maybe at night? A lot of those cameras are triggered by motion using PIR technology. Two things happen, loads of false triggers and loads of missed triggers. Even when triggered by a real event the camera needs time to boot and produce an image. That time is critical when a real event happens.
To be truly effective every camera needs to be selected based on the purpose it is intended for and where it will be located. Then it needs to be properly adjusted, not only for the specific view, but in terms of shutter/exposure and the whole list of adjustments that you would do with a decent DSLR camera. Plug and play is actually plug and pray when it comes to video surveillance. Plug it in and pray it gives you something useable. Unfortunately those prayers are always unanswered.
In terms of BI, yes there is a learning curve. It comes down to how interested and serious you are regarding security. I come from a security background, as well as a computer/network background, so I do have some advantages. If you can follow directions and do a little research in the help file it can be mastered well enough to produce a superior system. Worst case you can ask here or ask
Blue Iris support.
You can also do the NVR route, but using quality cameras instead of consumer junk. It's closer to plug and play but still needs to be set up properly to be truly effective.
Bottom line is you get out of a surveillance system what you are willing to put in. If you're happy with wide, sweeping views, go with junk (Reolink, SV3C, Ring, Arlo, Nest, Wyze, HelloKitty or no-name off shore garbage). If you want a surveillance system that can produce some tangible results be prepared to invest some time as well as money.