3rd gen starts from 2012 with Exo debut and end in 2016 with Blackpink/NCT. The Boyz debuts in 2017 and is considered 4th gen.
So if 3rd gen lasts 5 years, then 4th gen already lasts 6 years from 2017 to 2022. People say 4th gen hasn’t made a mark yet, but in 2017, no 3rd gen groups has become super big yet, BTS/Blackpink only reached their global breakthrough 2/3 years later. BTS was the 1st 3rd gen group to chart on Billboard 100 in 2017, just like NewJeans is the first 4th gen group to chart on Billboard 100 in 2023.
So with this being said, 2023 being 5th gen start seem correct, do you agree? But would Baemon be 4th or 5th gen, because most still consider them 4th gen but they debut in 2023 so they should be 5th gen.