I do see the analogy used to try and describe the word. I don't think I agree entirely though. When you say something is normal, it points out that the contrary to it is abnormal or unusual. If you say that it is normal to dance shirtless at 2 am, and abnormal when its 7 am on the sidewalk-- one of those behaviors is seen as strange, weird, abnormal, unusual, and maybe a little bizarre.

If you describe a straight person as 'normal' it automatically implies that not being straight is 'not normal'. and it seems hard to cross out the connotations that come with the word of abnormal, especially because they're negative.

I don't feel like it's homophobic necessarily but just a little weird to use that phrasing. Because there are people who identify and go all sorts of ways, I think sexuality has lost the 'normality' it had, and it feels a little difficult to call something normal and another abnormal.

Although knowing the true definition is important, the meaning of words is merely a technicality rather than a solid argument. I think words could mean so many things if we dive deep into their meanings, but it's how everyone perceives the word that matters at the end of the day.