Yet less than a year after its public market debut, the company, now valued at $5 billion, finds itself in the middle of a PR controversy related to the technology that underpins its services.On Twitter and in a blog post on Wednesday, Lemonade explained why it deleted what it called an “awful thread” of tweets it had posted on Monday. Those now-deleted tweets had said, among other things, that the company’s AI analyzes the videos that users submit when they