Every Shabbos, I am zocheh to give a 15 minute or so Drasha on the Parsha. I invest a lot of effort preparing it and thinking about it. They are not recorded [obviously] and I don't write them down [for reasons beyond the scope of this post] but they are my most beloved creations בס"ד [besides my children - but there I had more human help]. Of course I am nothing and merely a כלי for the בורא עולם to work through but I'm honored and pleasured to be a כלי for this.
Today's topic was the Yerushalmi that says that Korach was an Apikorus-Kofer and the contention that מחלוקת שלא לשם שמים is worse.
You can develop your own ideas as to why [or why not].