Lots of good advices for dealing with a conflict. Choosing the right words and the right time matter. Not easy to apply but worth trying.

Good balanced view about Web Components. Interestingly it seems the adoption is already higher than I expected.

A good reference on most of the branching patterns you can find. From this you can derive your project wide policy. Also it's spot on when it says that branching is easy but each time you branch you need to keep in mind how you're going to merge.

Nice little primer about Elixir and Phoenix. Be careful though, I spotted a couple of mistakes in the code examples. That still gives a good idea of advantages and limitations of this stack.