The thought of you picking up a first-level ticket brings me no end of amusement.... I think there are a few things to tackle here (I have done internal, consulting, and now am a consumer of IT).
1. Kinda hard to suggest these are HR issues. My wife is in HR and would enjoy a long chat with you about the responsibilities of HR vs IT folk. Pretty sure the answer would be "_HR provide the LMS platform, IT is responsible for content"_. Most internal orgs at scale will have a level of IT training skillset on staff
2. The above configuration stances I think are vertical sensitive. In Health for example, 80% of consumers don't need choice and flexibility, they need consistency and standard controlled access - both for the consumer to easily get to exactly what they need, and for them to be supported efficiently. Other verticals however allow way more flexibility. I don't think it's always about users being dumb per se, there is often logic behind the madness (personally I hate the hand holding but I get it)
3. Supportability as a whole is an interesting thing, some of the smartest users around still refuse to RTFM and can log some stupid tickets for basic things - a lot of orgs are trying to reduce calls etc so the lesser evil may well be over catering on the "managed user" front
4. As for it being a bane on consulting engagements, one of the first things I would do in any project that had that level of user management/mapping/environment configuration is teach the IT guys to the toolsets and make them do it. Mostly for me it was WEM, So I would teach them upfront, give them the keys, and ask them to build things and then I would review prior to implementation. Empowers them and gets it off my back