systemd analysis: a personal perspective
As usual in these cases, not just Lennart, but many of those who supported him, also those who sponsored these efforts, has suffered all kind of attacks. Sadly not just for technical, I mean ATTACKS. Even journalists have been involved. Yes, Free Software is also mature enough to have "yellow (technical) press" associated, political and business interests and people in different communities willing to use them against anybody who threaten the current status quo.
But this is something you have to be prepared to assume if you want to succeed in bringing key changes in mature environment. And Free Software is becoming a mature environment.