Having the right people in the right place in the project would absolutely make the project manager life easier and would make the project flow smoother and would ensure the project success.
Choosing the proper team member doesn’t necessary means having people with great resumes only, it also focuses on having all the skills a project manager would need in the project.
On the other hand, choosing the wrong team members can cause project failure even at an early stage. From my experience with different groups, I do agree that picking a good project team members for a project is really important and would really affect everyone else in the project. This includes affecting the project work environment and the workflow as well as the outcomes.

https://www.pmi.org/learning/library/team-building-development-project-management-5707