I went off a bit into more personal cases in the thread. But my original post was aimed at other/larger projects. If they maintained a proper git repo and used the platform tools as secondary tools (eg. discussion oriented instead of record oriented) then they wouldn't be locked into Github. I agree that a bunch of ones don't do it correctly and put the context that should be in the repo/messages into the PRs or issues. That is a mistake. But switching from Github won't help that... they'll just do the same thing elsewhere and lock themselves into that site or tool (ie. lockin doesn't require a service, just tools that do more than manage the repo).