The illustration is of course just glyphs, but plenty of such symbols are found in e.g. paintings and stone and bone carvings. Not saying it's writing, but these kinds of symbols are not uncommon findings.

If you give me a stick and some sand these are some of the most common things I would be able to draw. I’m not sure that makes it a universal language. Every culture with a snake is going to have a squiggle line that looks like a snake. Everyone has a hand so they will make a hand print, etc. An X, a spiral, something that looks like a branch.

You had to bring Elon into this..

Yeah, but for every single instance of every single one of those glyphs, someone needs to publish a paper substantiating similarity to whatever that archetype is. You can't just put up a pretty font diagram and announce "They use the hand symbol here".

This is the same thing as all those stories about the Impossible Black Hole That Should Not Be There illustrated with something the graphics department threw together in photoshop.

Such work e.g. here: https://www.nature.com/articles/s41597-020-00704-x

hatching and crosses are used even today on tools to make them easier to grip. We'd expect them on smooth and hard tools made of bone or rock.

https://en.wikipedia.org/wiki/Knurling

These patterns are found in paintings too.