It's life. It's one thing to call people amateurs from a sofa and an other to find yourself in 20 person team arguing about things.
The easy solution to arguments is having less things to argue about, similarly how Go solved formatting wars by an official format, Angular solves those fights by providing a default implementation.
It's not life, it's your typical bike-shedding. React is being used on much larger teams all the time without spending months on arguing whether react-router is the right choice. I don't think I have ever spent more than ten minutes on choosing which library concoction works best for a given project.
In less dysfunctional organizations you go with whatever the technical lead specified.
The easy solution to arguments is having less things to argue about, similarly how Go solved formatting wars by an official format, Angular solves those fights by providing a default implementation.