This is due to their lack of technical knowledge and they have accepted this reality because the outcomes that they want do end up happening so they dont rock the boat(or know how to since they can't discern technical stuff).
I know its a great spot to be in short term but Ive been scared because long term I will be in a big hole when the next role comes along and its more like what you describe and I haven't grown to match the role. I've considered leaving once the market improves but I don't think I can fathom giving up what I have either. Alternatively I have considered staying until I eventually get downsized but that could be years. I don't know.... :/
A good personal open source project is worth more when interviewing than anything else really. Can't fake that in an interview.
For example we compile locally, then manually move the compiled code over to the server instead of using something like docker. Part of this is the restrictions we have over our environment, part of this is inertia.
Fortunately I haven't given up trying to move to that paradigm but sometimes I actually dont want to be on a modern team. Its like I have plateaued to a comfortable state that I know wont always be there but I wish it did. I hope what I am explaining makes sense.