Unfortunately, if you really start digging in to what is going on in the financial world, you will find he has violated no norms here. This is not a defense of Elon; this is a condemnation of the entire financial industry.
The whole thing scares me, honestly. It has never been a clean happy market where lots of honest people get together and are just honestly trying to make a better world for each other, there is no golden past where people were just nice or anything, but damn if computers don't let people build some structures that the robber barons of old could only have dreamt of. I'm really concerned that "index and chill" doesn't just have a "best by" date but that the best-by date could be in the past; I've heard of an awful lot of ways of exploiting it and other retirements schemes we have, this is just one. I find it implausible that these ideas exist but nobody is doing them.