Celestialphoenix
Too Much Free Time
I actually use the vanilla launcher. I find it really easy to use but then that's because I know how to use the old File Manager (aka Windows Explorer) which is a skill lacking in many people in this more technological society.
Too many things have wizards or auto-configure, giving people zero incentive to actually learn what their magical box of tricks does and how it works.
Its not it installation- as that was perfectly easy on the old launcher;
its setting up profiles (for some reason theres 2 of the things) and renaming all the crap in the .JSON [or whatever the hell you need to do now].
The profile function is useful, but it would of been perfectly feasible to do that whilst keep the [almost] plug and play nature of installing mods back then.
--back then I maintained multiple profiles by having many different .minecraft files which I'll manually switch out. Each was kept in its own folder telling me what it is.