This is extremely overconfident. Injuries happen. People forget that after 1 season that injuries happen - the Devils lost extremely few man games to injury, with only Palat and Bastian missing significant time. The Devils used 19 forwards last season, which really averages out to 18 because they traded Zetterlund for Meier. They used 23 in 2022, 20 in 2021 (19), 19 in 2020 (18), and 25 in 2019.
Winning the Stanley Cup is extremely hard and even harder in an era of 32 teams. The Devils' expectation is not multiple Cups. It would be great if it happened, but it's not likely.