Thumper (Bambi) is a rabbit.
Hazel (Watership down) is a hare.
Whoa there. Are you seriously gatekeeping sci-fi? Don't be a jerk.
Just the MCU characters with an obvious sci-fi backstory: Tony Stark, Hulk (an actual scientist), everyone in Guardians of the Galaxy. Even Thor is actually an alien using Sci-Fi tech. Bucky Barnes is a cybernetic super soldier. There's the Nazi scientist from Hydra that transferred his consciousness into a computer. Fucking Vision and his love story with Wanda. Black Panther may mix in some mystical drug, but his suit and all the other toys are all science fiction.
I'm not arguing that ANY of these are great science fiction stories, but they are still undeniably science fiction. Sci-fi stories are often also something else: horror, action, humanist, dramatic, comedy, or all of the above.
Not every science fiction story needs to use the obvious sci-fi tropes either. Ursula K Le Guin wrote a bunch of very influencial science fiction stories that you could be forgiven for classifying as fantasy and have very little shiny tech in them.
Because vector graphics take up much less space. That's the joke.
Now I'm going to put the joke out of it's misery.
Most of the illustrations, formula, tables etc. in a math book could be vector graphics, most of them were in 90% of the upper level math text books I've ever had, usually in only 2 colors. Many math formulas can be represented and formatted directly using only Tex or LaTex. Mostly physics and math involving more than two dimensions would have more raster images, even color. But it's not like the publishers are going to be handing out PDFs with original vector graphics embedded. That would make high quality knockoffs trivial.