I agree with these factors for the following reasons:

It’s important for everyone on the team to be on the same page and therefor agree with the project goals. If a team member doesn’t agree or has concerns it’s important to bring this up because it could be something crucial others overlooked. Proper communication comes into play so that no conflict arises and all the concerns or disagreements are sorted out. If a deadline is not reasonable and it plays an important role in the project goals then this is important to point out from the beginning. Having a clearly defined plan with assigned responsibilities is super important and I agree that this is part of the success factors. Group work has many pros but it’s easy for someone to quickly start taking on most of the load. In industry it could be that each member of the team has their own specialty and would do part of the project within their scope. You can’t have one team member micromanaging and stepping outside of their task if it’s unnecessary. It’s unproductive and could cause conflict. Setting clear expectations and tasks from the very beginning helps avoid this. Throughout the timeline of the project, the project manager should always be checking that the tasks are aligning with the scope and no major deviations are occurring. Without strong reliable management a project can be doomed for failure.