Thibault,
Thanks for the review. I've only been paying sporadic attention to the ROS2 process of late, and this was a useful reminder of the state of some things.
I'm looking forward to hearing more about the status of ROS2 next week at ROSCon and, in particular, it would be great to get a response from the developers on some of the things in this document. As an example, rebuttal 1.1 says "This will eventually be okay when everyone uses ROS2.", which I believe, but claim 3.2 suggests that this will not happen for a "long time". It would be more reassuring if I had some idea of whether a "long time" is a few months or several years.
Primarily, I worry about the community splitting in the time required to do the migration, and then never coming back together again. My fear is that everyone will pick one version to work in, and it will lead to two communities (perhaps academic and industrial). This would undermine one of the core strengths of ROS: it's community.
I'll also note that the word "hopefully" appears in 40% of the rebuttals. Many of these have a claim of the form "I think that X will be a problem", and a rebuttal of "Hopefully X will not be a problem". Hope, as Rudy Giuliani said, is not a strategy.
-- Bill