Apparently you misunderstood. I didn't write tattoos are "literally the same thing as being gay". I showed the same faulty reasoning used in that's line of argument about tattoos.
Or unless you did understand and you're just being intellectually dishonest. I'm not sure which one it is. I assume just a misunderstanding of what was written.
Next time try to use an analogy that doesn't need explanations to clarify why it isn't entirely broken. For example cut off fingers would've been a useful one, particularly in this context.
It doesn't need an explanation since it's a pretty simple swap.