I think they only put them in when there's a long period with no captions. Usually at the beginning or end of a video, but I've had them during a silent/dialogue free scene in the middle of a movie before.
It's coming. I've been using my sisters D+ account, but she got notice that they're cutting off account sharing as of the end of October (in Canada at least), so back to sailing the high seas for me.
He posted a picture on Mastodon, that's actually the logo of Williams upside-down.
That's not actually true (according to Wikipedia and a few other sources, at least). The 'blood is thicker than water' saying has been around for centuries in various forms with the current meaning, and the covenant/womb variation is relatively recent, and mostly stems from a few books that claim that it's the 'real meaning' without sources or proof.