I disagree: it's a business prioritisation issue (not necessarily a problem). Ultimately, a lot of the processes are there because the wider business (rightly) wants IT to work on the highest impact issues. A random process that 3 people suffer from probably isn't the highest impact for the business as a whole.
Also, because it's not high impact, it makes sense that an intern is co-opted to make life easier (also as a learning experience), however it also causes the issues OP highlighted.
The problem is solvable, I think, but it's not easily solvable!