Of course you make your own decisions. However that does not mean that someone's actions did not influence your decision. Note that since your 'Boom' post, I've had a number of PMs/emails from concerned people. I don't know the full story, but I have been told part of it and been pointed to some outside public information. According to the forum history - this is what FlightGear users will see in the future - in chronological order you:
There are a number of other posts where the content was replaced with "-". This sequence of events seems to fit with the story line that I've been told in private - that there was a falling out within the IDG group, someone forked the GPL content, you were not happy with that, you nuked your GitHub development repositories replacing them with new repositories of the same name with zero developmental history (removing the GPL licence text), you terminated your forum development threads, you updated the wiki articles to reflect the IDG shutdown, and then you dropped this large nuke. I've also been pointed in private to some public posts against the GPL. I have not verified if this sequence of events is true, but this is essentially what I've been told and pointed to.
As for your legacy, you already have one. Everyone has a legacy. In your case, people will admire your aircraft and numerous contributions for decades to come. And you have set a very high bar for the development of airliners that other developers can look up to. That is your legacy to the FlightGear community, now and well into the future. There is a good reason why I pushed for you to obtain full
FGAddon commit access. By placing your aircraft there, and you having full control of them, your developments will be available in 20 or more years. Your contributions will move with the FlightGear project and will outlive the future and inevitable eventual shutdown of both GitHub and SourceForge.
Regards,
Edward