The other numbers and Hagel rune are very explicit white supremacist symbols, so trying to downplay them is suspect. As Chloyster pointed out, it seemed like the person saying that the 100% is racist was trying to mock people saying bringing up the other symbols. Even the ADL says you need to look at the context for the 100%. Bringing up the OK is also suspect, since, again, even the ADL says the context matters.

Also, nobody is saying they are hate crimes, but hate symbols which you should absolutely be aware of and not include in your game, even if by accident.