One Piece is a 'masterpiece,' but for new teens it’s too long to commit to a full read.

I feel it’s ‘okay as a work, but too long for new teens.’ It’s become a long-running epic that you enjoy with the history of its serialization, so it isn’t something today’s teens can catch up on from scratch. A practical approach might be to sample the key parts, get a rough sense of the world from anime recap videos and analysis videos, and then dive deeper into the chapters they liked in the manga.