Pride is the opposite of shame. In a world where you’re often told to be ashamed of who you are, to be proud is to resist.
You likely have very different standards as to what you perceive as vocal when it comes to LGBT people. A man and a woman kissing in public might not grab your attention, but two men doing the same are “provocative”.
Around 8% of people globally identify as LGBT. Considering the real number may be larger (as people are often afraid of disclosing that their sexuality is anything but straight), it’s very likely that someone in your close circle is LGBT.