Yes, because they learnt it somewhere, for example, this article.

I don't get the negativity. Unless you work on bleeding edge R&D, every technique you know has been documented somewhere by someone else. So only the bleeding edge R&D people should write tech blogs?

Anecdotally, even I had known what texture compression is, this article still taught me something: the existence of Tacant View. It looks like quite a neat app.

Of course, they might have written the blog post with the intention of drawing attention to themselves and being noticed. These days, I can't bring myself to be upset about that sort of thing - if the content is good, better self-promotion than AI slop or hyping up the next hot investment vehicle.

Mostly web games I'd think, it's not uncommon to ship with png or jpg textures for small download size (but then you pay with in-memory size and texture sampling bandwidth - thus Basis Universal).