What’s the point of capitalizing the first word of a sentence? Why are English letters pronounced differently in the same arrangements depending on the word? The language just is like that, it basically evolved over centuries to end up in this form.
Languages weren’t designed to work in a certain way, there wasn’t somebody smart saying they should work like X because Y, it’s just slow changes to how many people speak.
I’m pretty sure even if that was the case, the word was hijacked by bigots to insult anything they disagree with.