For followers of Intoxicant, the "HotPink" update usually signifies:
Elena stepped closer, the glow of the digital billboards outside casting a magenta hue across her face. "That’s the lie we all tell ourselves before the update happens. You think you’re the player, Elias, but tonight? Tonight you’re the one being written."
: Intoxicant is an adult-themed visual novel/interactive fiction game featuring pixel art, voice acting (by DudeThatsLewd), and ASMR elements.
The phrase “intoxicant 20211119 patreon hotpink upd” most plausibly refers to a patron-only update posted November 19, 2021 containing an updated version of a work titled “Intoxicant” and associated visual assets labeled “hotpink.” For definitive confirmation, consult the creator’s Patreon post history or public channels from that time, or contact the creator directly if you are not a patron.