Not sure what big deal is. You learn somewhere along the way that you check for null values with “is” vs “=“. Done, write it on a sticky note if you need, and m

Not sure what big deal is. You learn somewhere along the way that you check for null values with “is” vs “=“. Done, write it on a sticky note if you need, and move on. “Why isn’t it consistent??” - well a lot of systems have a lot of bat shit crazy inconsistencies, some times there for good reason. You learn to keep them straight and get your shit done. If you want to learn the “why” every time you encounter a system design quirk, be my guest but you may be going down a time intensive rabbit hole with little pay off for yourself.