Warning! Spoilers ahead for Young Sheldon season 6, episode 12. Young Sheldon season 6 features a small but important detail that reveals Sheldon's true feelings about Howard in The Big Bang Theory. Despite Sheldon's lack of social skills, he found a great group of friends in Pasadena. While he appreciated them, he also tended to mock them mercilessly, especially regarding their academic achievements. However, Sheldon didn't invalidate and ridicule anyone as much as he did Howard.
https://screenrant.com/young-sheldon-season-6-howard-tbbt-feelings-jealous/