It was called Summer Bash last year, which means it hasn't been called 4th July event for at least 2 years now. Also, this is a much longer event that spans a much wider length of time than 4th July.
Rather than make a fuss about it just be happy, because there's been absolutely NO signs that anyone in this community cried about it being 4th July before, therefore that means that YOU are the only one that crying over the situation, a situation that didn't exist in the first place.