In good software, the bugs don't cause user-facing issues. QA teams aim to make software good by finding them.
Speedrunners aren't users or QA. Speedrunners find bugs no matter what. From the developer's perspective it really doesn't matter if you can save 20 hours beating a game by clipping through the wall next to the boss, if that clip is so immensely complicated to perform that no user would ever encounter it naturally. The devs can be surprised, or not surprised, to hear their game was beaten much faster than they anticipated by speedrunners; either way it does not make their game worse or rushed or a product of bad communication.
The Legend of Zelda: The Wind Waker came out in 2002 and sold 4.6 million copies. In July of this year, a new bug was discovered by dedicated minds, not randomly but after nearly two decades of hard work, that saved two hours on the speedrun by clipping through a barrier that was supposed to be unpassable. Does it really matter from a quality standpoint if this bug exists or not? Would your original rating of The Legend of Zelda: The Wind Waker be lessened 17 years later because this bug was found by people who perhaps spent more hours trying to find it than you've spent playing video games in your entire life?
In good software, the bugs don't cause user-facing issues. QA teams aim to make software good by finding them.
Speedrunners aren't users or QA. Speedrunners find bugs no matter what. From the developer's perspective it really doesn't matter if you can save 20 hours beating a game by clipping through the wall next to the boss, if that clip is so immensely complicated to perform that no user would ever encounter it naturally. The devs can be surprised, or not surprised, to hear their game was beaten much faster than they anticipated by speedrunners; either way it does not make their game worse or rushed or a product of bad communication.
The Legend of Zelda: The Wind Waker came out in 2002 and sold 4.6 million copies. In July of this year, a new bug was discovered by dedicated minds, not randomly but after nearly two decades of hard work, that saved two hours on the speedrun by clipping through a barrier that was supposed to be unpassable. Does it really matter from a quality standpoint if this bug exists or not? Would your original rating of The Legend of Zelda: The Wind Waker be lessened 17 years later because this bug was found by people who perhaps spent more hours trying to find it than you've spent playing video games in your entire life?