The reason people might think it's spelled wrong is because it has an unusual spelling that doesn't follow typical English pronunciation rules. The "ei" combination usually makes a long "e" sound, like in "receive" or "believe." But in "weird," it makes a different, unique sound.
This is just one example of how the English language can be inconsistent, and it often leads to people questioning the spelling of words that don't fit the usual patterns. 😊