No, it's not. The moderators were informed of this earlier today by the Community Moderation team. The requirements for graduating from beta are 1) the site must have existed six months or more, 2) it must have at least 1000 open questions, and 3) at least 70% of the open questions must have at least one upvoted answer.
A site has to meet all 3 criteria but we failed on #3.
This site has always suffered from two major problems. The first is too many poor questions. We close a large number of questions every week, almost all of them due to lack of prior research or asking for personal medical advice. The second problem is too few people qualified to provide good answers. There are hundreds of good questions here with no answers, and that's why the site remains in beta. It's worth noting that we lost a number of high-rep users in 2020 because they were medical professionals and 2020 wasn't a good year for medical pros having a lot of free time on their hands.