This was a positive read! About the stress and modularization. It's important that developers feel they are an important part of the team. But if they are working for free, it needs to be fun and not feel like work. Interacting with others are fun! But not if it gets out of control. So when you modularize, you should try to make a balance for human interaction in mind. Maybe keep the number of module interaction down below five at any given time, example: When a new feature is added, max five modules should need updating.

Sometimes we forget that we are making software for humans, by humans, and not for compilers and computers.