Re: We've been there before
Aye.
I would expect the Venn diagram of "People who are dissuaded by the complexity of configuring an e-mail client" and "People with the potential to be bare-metal developers" to resemble two circles with a wide space between them.
Every attempt to introduce caged software into the Open Source development process must be resisted. There is no benign caged software. It is always a trap, always ultimately a way to restrict your ability to use your computer freely; and manual methods are always to be preferred to the use of any proprietary tool.