During the start of 5e when there were lots of questions bouncing around, people took to twitter to ask questions to the devs directly. At first people focused their questions to Mike Mearls because he's a famous guy but the more he was asked questions the more people started scratching their heads. The reason for this was that the answers he gave were his rulings and not how the game itself was designed to work. So he contradicted the rules in almost every response which lead to even more confusion. That's when Mearls, Crawford and others decided to nominate Jeremy Crawford as the rules guy. If you have a question and want the answer based on the rules and not a simple ruling, you ask him. Which is what makes maxperson's posts even more ridiculous!
Anyway that aside, the RAW and RAI clearly don't agree with some of the posters in this thread. However, they are convinced they are correct. This is the exact reason why I didn't want to get involved in this thread earlier since I've gone through this whole process on the WOTC forums. They have their shutters on and they just continue on and on. But at some point, reading someone constantly tell other people who are playing correctly that they aren't and should follow a houserule of theirs instead, or that the RAW says something it doesn't just gets to me. Play your game how you want, don't go online to tell people your rulings / houserules are how it's meant to be played. We have the lead devs and the rulebook for that thanks...