He's talking about not seeing the game score on the TV feed of a live game. He's not talking about the player used to view the game. Like you said, there is a hide scores button for that. A lot of the time, international viewers like us, can't watch the game live from the start, so sometimes, the game could be over half way through and we have to press the button for it to go back to the start of the game to avoid seeing the score. You can easily catch a glimpse of the score on the TV feed if you don't cover the screen, it kind of ruins the game if you wanted to watch it from the start.
btw, I have a suggestion for all you guys that have NBA International League Pass, write in to their support and ask them to put an option in the player's configuration settings to watch a live game from the beginning (rather than whatever point the game is in live). I just got the NFL GamePass a few weeks ago and they have the option in the player to either watch the game live or from the beginning. Not sure if they had it there last season though, or if it's a new feature in the player for this season, I only just noticed the option to watch a live game from the beginning a few days ago. The same company that does the NFL GamePass also does the NBA League Pass, so it shouldn't be too hard for them to implement that feature. I sent them an email yesterday asking if they could incorporate that feature into the NBA player if they don't already have it. If they don't have that feature and more of you guys write in asking about it, then it is more likely that they will do it, so please write in and ask about it.