We all know the devices on the market are not what we need, are not what we want and are not what we wish for the future. We have the inner need to change that. We have the inner need to create the one perfect device. So we will create such a device. A device we can be proud of having participated in the design process. A device that fulfills our needs, takes care of our wants and leaves room for our wishes in the future. That's what we are here for.
(Sorry, that was a bit SteveJobsy, but I think it describes best why we all invest time and energy in this project)
So coming back to topic, a second USB-C port is currently not needed, it could be wanted but more important it is definately wished by several people here for future use. You aren't forced to buy expensive accessories as you already have two USB-A ports free for use - really need a third one now?
Your last argument brings it down to a rather important question:
How important is not exceeding a specific point in costs?
To me the price tag of the device is secondary as I will use it for my job. If in the end the device costs 800 or 1,000 or 1,500 bucks doesn't really matter to me as long as it works the way I need it to work. A few hours of interruption and error handling is much more expensive than a higher price tag first place. This is why the announced extra QA assured me in putting time in this project as it will be worth it. I assume there are several more people here with this requirement, but we are just one part of this community.
You stated in other threads, that to you the cost point is pretty strict and that with a few bucks more you will not be enable you to buy our anticipated device. This is a totally different approach to take into considerations - and this stands for another big part of our community.
Eve has the difficult job to take all this into consideration and I don't envy them. They need all of us to make it a success - so let's make it a success.