It should be noted that the arachnophobia option is very specifically intended only to address real arachnophobia, because the replacement models are not less frightening or horrifying, they're just less spider-like. Disembodied glitching cat-heads is still pretty fucking terrifying.
this ^
there is literally someone in the office who -cannot- play the game with the spiders. couldnt even walk past the artists'/animator's desk as they worked on the spiders without freaking out.