Show’s ending had a lot of gaps

Did the number 31 give full custody of the kid to Barney? How are Ted and Robin going to manage their relationship if Robin is always travelling? Is Barney going to be okay w Ted and Robin together?

I have all these questions and just feel they should not have rushed the ending, the last season had so many episodes which could’ve been easily skipped and could’ve had actual story but they just made it unnecessarily long😭