As long as it isn't a multiple account situation, I see no problem with it.
Different managers take pride in doing different things on BB. For about 6 seasons, I neglected my own BB team and focused solely on coaching up and training players for the USA U21 NT. I trained maybe 5 guys in that span to try to get them on the team and only two of them actually played substantial minutes on the team, while one only played in I think two U21 NT games (one was a scrimmage).
Some managers just care more about their Nation's success in BB rather than their own team.
Murray/Harris/MPJ/Grant/Jokic - 2020 NBA Champs