I completed the ML specialization for Georgia Tech's online CS MS program (https://omscs.gatech.edu/) a few year ago and found it tremendously valuable. I can't say that it changed the trajectory of my career, but I learned a lot, met some great people, and (in hindsight) had a ton of fun.

Keep in mind that most machine learning fundamentals haven't changed for decades. While new architectures/trends are always emerging, the lessons that you will take away from an academic program like OMSCS will be relevant for the rest of your career.