Now, this is exactly what I meant by you trying too hard. Lennart is still involved in everything he has written. Doesn't mean, he has to be the primary maintainer. I see, your list includes KDE but doesn't mention GNOME. That's very convenient. Firefox? Apache? PHP? Exim? GTK? The list of projects that have new maintainers now is far longer than yours.
David Faure might be involved in KDE but what about all the different KDE modules? There is nothing to indicate that developers have to hang on to every project they start forever. Quite the opposite. Transitioning maintenance is a *very healthy* thing to do. Nobody has to worry about the bus factor much if every project had new maintainers from time to time.