It's pretty much on-brand for them. The OpenBSD project started when the founder was kicked off of the NetBSD core team, allegedly for being rude and abrasive to users. At one point, both the FreeBSD[0] and NetBSD[1] mailing lists blocked traffic from this individual because they claimed he threatened to aggressively spam their mailing lists.
0 - https://mail-archive.freebsd.org/cgi/getmsg.cgi?fetch=56044+... 1 - http://mail-index.netbsd.org/current-users/1996/10/20/0004.h...