Other than for the lame current-assisted swim, and the crowded bike course (if you don’t start in one of the first groups), it’s a great race, sign up if you can. Most of the run, plus the finish line, in Central Park is a cool experience. I’d recommend it to anyone, specially beginners.
As said a million times, only issue are the whimsical NYC weather and conditions. Sign up but be prepared to see your swim canceled, run shorten, entire race canceled. We haven’t had a full race since 2018 (even then some were not allowed to run the full 10k due to the heat).