There's a spectrum of intelligence for both engineers and IT folks...
I've worked with engineers who are brilliant and engineers who made me lose all sense of respect for the institution that gave them a B.S. (with 3.7 GPA no less in one case).
I know some really smart IT guys who, honestly, need to find a much more challenging and higher paying job doing software/system design.
But I have know some real IT heals...as well.
At one job I was prohibited from placing UNIX systems on an otherwise all windows network because the IT people were affraid of QNX/Linux/BSD and their "voodoo". I had to talk the VP of plant operations at my site so he'd yell at them (which he did) and tell them to give my systems network/internet access.
At the same job, IT cut network access no less than on three separate occasions to our SCADA servers (supervisory control and data acquisition) which collected and analysis process data for our whole plant. So operations went kinda FUBAR...
Our SCADA servers were behind a one-way firewall and were set up to send data from the actual SCADA servers to an "wild side" (what I called the business LAN) network data server which in turn servered data to QA/QC folks, enigneers on the business LAN. So IT could see the SCADA data servers on the control system network but couldn't scan the windows SCADA data servers (there were QNX boxes too) and, per their policy and procedure, cut network access to them and refused all traffic to/from the servers.
The third time this happened my boss almost punched the IT manager...the meeting was classic...the plant VP spent a good 15 minutes elucidating how stupid the IT department must be [to the IT managers faced no less] to cut network access three times to some of the most operation critical systems in the plant.
BTW...the SCADA servers were updated regularly...just not in the usually way. I got CD's once or twice a month with the windows patches/updates, control system driver updates, and SCADA software updates all rolled into nice tight, tested, and validated packages so the system was updated as a whole in an orderly manner.