Not to nitpick your point too much, but VP tends to have a specific meaning, even if its given to many employees. Usually, it means that this employee can sign contracts or make certain regulatory commitments on behalf of the company. Its not always self-aggrandizing.

It absolutely does not usually mean that, there are a ton of finance VPs that nobody would ever let sign anything meaningful without someone up the chain reviewing it. There are also tons of people who sign contracts for companies who are not VPs. There are companies where VP is really just about comp; all jobs above $x/year are some flavor of VP, even ICs.

It doesn't have to always be self-aggrandizing for it to be true that lots of people are now called VP who used to just be middle-managers.

There's a joke in finance that VP is an entry-level job. Largely because that field is very status-driven and people want a glorified title, despite entry-level responsibilities.

In medicine doctors are now “providers” no different than nurse practitioners, physician assistants, RN, PT, pharmacists etc. it’s the opposite, leveling everyone to the lowest common denominator

In some countries some profession names are reserved. There you know that a doctor is a doctor, not a guy who went to a hygiene bootcamp.