Wrapping each individual config option in `=begin` and `=end` feels like the worst possible setup :(.  I chose `=begin`/`=end` specifically to wrap the entire set of config options so that they are all commented out and can easily be uncommented.

How about this:

* Keep the "wrap everything with `=begin`/`=end`" setup we have now, as that makes it easy to accept the suggested settings (and makes the cuke I added easy to write).
* Remove this setting from the generated `spec_helper.rb` for now, with the plan to consider adding it back in some 3.x release if it looks like users are adopting it.
* Update all the docs (including READMEs and cukes) to use `RSpec.describe` rather than bare `describe` to make that form more visible to end users.  I'll make sure to mention this in the 3.0 release blog post when that time comes.