Is Bill Gates overly optomistic about AI?

Bill Gates's blog recently released an article that framed AI advancements in quite a positive light. 

For example he touted many altruistic applications of AI coming in the near future and claimed that "none of the breakthroughs of the past few months have moved us substantially closer to [dangerously] strong AI."

I'm not knowledgable enough to evalaute his claims, and tbh I trust this community's opinion a lot more than Microsoft's, so I wondering if y'all could share your thoughts on this article (it's a 14 min read). 

The link is above and here: https://www.gatesnotes.com/The-Age-of-AI-Has-Begun