In everyday life, we have friends of the same sex, and we show them affection without being labeled as "gay". Like, remember that time you hugged your friend after a long time apart, or when you gave them a high-five for acing a project? Those are all forms of affection, but they don't define your sexual orientation. It's similar with BTS and Big Bang - they're just showing appreciation and love for each other as friends.
And, let's be real, the media can sometimes be too extra. They take things out of context, blow them out of proportion, and create drama where there isn't any. It's like when you're trying to have a good time with your friends, but someone misinterprets your jokes and thinks you're being serious. Not cool, right?