I can't see why they would get annoyed. They would only choose to add more members to the team if they needed them. Unless a clueless manager decided to hire someone without consulting the team.

It does seem to be a growing problem, lack of hierarchy. RL experiences were probably a regional thing, country-folk cover for each other, individualists don't. I meant tho projects that do need more help, but cockiness seems to be a growing issue too. Hopes to collab on anything not looking good.