[oldE]

This sounds remarkably like a scenario my son described to me a few weeks ago. He too is an IT guy for a company which has had :a/ a system in place for a few years and :b/ turn-over in their IT dept.
That combination tends to create a back-log of problems which get 'bandaid' fixes which, in themselves create more problems.
A bigger problem can be managers who have some emotional baggage in their historical involvement with the system setup and pressure from their bosses to support the system for performance and cost targets.
Then along comes a new guy who sees the problems the system has got and feels hesitant to say what is wrong and what has to be fixed.

So, I'll give you the same advice I gave my son. Be proactive with this. If you like the company/site and would like a future there, try to come up with solutions and work with others to implement them. Remember the emotional attachment some people will have with the system currently in place. There will be a lot of inertia to overcome, but if you are not too proud to plant ideas (and, from time to time, let others think they are their ideas), you can make the changes happen and have a better work experience.
If they don't want to hear it, maybe you should think about moving on.

Good luck
Les