I consistently hear people on YouTube complain that the subscribe button doesn't do anything for viewers, now that channel notifications are controlled by the bell. But it does do something: it puts the videos from that channel in your subscription feed, which is readily accessible on all versions of YouTube. So why do people act like it doesn't exist? I think it's super convenient, especially if you're subscribed to a ton of channels and don't want your notifications feed flooded with new videos.
Not quite. The LGBT initialism only includes lesbians, gay people, bisexuals, and trans people. It doesn't include asexuals, pansexuals, or intersex people, just off the top of my head. I don't imagine many people will correct you for just using LGBT, but it can be more inclusive.