As of my knowledge cutoff of September 2021, Reddit no longer allows the posting of links to illegal or unauthorized streaming websites, including those that offer MLB games. Therefore, there are no "official" Reddit MLB streams. However, there may be subreddits or threads that discuss and share information about legal ways to watch MLB games. Alternatives for Reddit MLB streams 

provide information on the legitimacy or safety of websites that may offer illegal or unauthorized streaming of MLB games, including the website you mentioned ( It is important to note that accessing such websites may be illegal and may pose risks to your device and personal information. I would highly recommend using legal alternatives to watch MLB games.