That person made conclusion based on nothing. This comic is nowhere near the end so we wouldn't know what the author, Old Xian, is planning. I follow her social media and read all interviews and did some good information gathering but what you heard is wrong. The boys technically seperated for a while but we never got to see that beacsue this was skipped. Now we are in the present time where they are all in the same city again. So no, there won't be seperation coming, or at least the author and story ever implied that. Also it would be a strange plot hole to be honest.

I saw someone saying that at the end of the story they all part ways. Is that true? I know the story goes back and forth in the timeline so it’s a little confusing. After the timeskip do they separate again?