Lennart is professional programmer who has had great success. You sound jealous
Yes to the first, but why did we have to be subjected to them for so long when they were still alpha quality? The second, no, I took a different path so cannot compare myself to him even when he's done stuff I would have considered utterly stupid at the age he did it at despite not being so much of a professional programmer.
Pulseaudio mostly works, which is about what you can say about computer audio on most platforms so that's a shining success. NetworkManager is a good fit for laptops, servers not so much but apart from odd glitches it works, which is more than can be said for MS networking so it's a success. Systemd - still not as good as what it is meant to replace and the non-professional bits of Lennart's behaviour mean it's deployed where it shouldn't be and many valid bug reports are discarded as if they are irrelevant.