There was no "careful consideration" whatsoever.
What you did was the opposite of careful in fact:
Without ANY prior discussion with the maintainers of the existing Freenet project you came to the mailing list and DICTATED your decision of reusing the name "Freenet".
It's all publicly documented in the mailing list archive, see the thread "Important Announcement: Freenet naming change" of Ian Clarke (Ian Clarke is the user "sanity" I am replying to here):
https://www.mail-archive.com/devl@freenetproject.org/
When you dictated this, the team said they're against it - and you did it anyway.
Yes, you claimed you discussed it with the "board" of the project!
But the "board" only contains people who haven't talked to the team in over a decade. Of course they shrugged off your decision because the only way they are in contact with the project is through what you say, so you can shape their opinion however you please by selectively deciding what you tell them.
It was a very sad act of disgracing the effort of volunteer contributors.
And it isn't even in the best interest of your new project either, because it seems to haunt every discussion about it.
How about thinking about whether you made a mistake?
Mistakes happen and aren't bad. What's bad is never admitting one.