My parents’ plant was stressing me tf OUT 🤢

My skin was itchy just seeing this in person today… and honestly still is looking at these pictures. I’ve never seen this many pests on one plant at a time before. My stepdad says this happens every winter and he always puts it outside and they go away… but come back?!?! I took these photos from a safe distance… I have no idea how he’s cool with this lol I am horrified