As a long-time watcher and enjoyer of his presentations, he has a long history of building (often) superior products to the mainstream alternatives, and passion

As a long-time watcher and enjoyer of his presentations, he has a long history of building (often) superior products to the mainstream alternatives, and passionately explaining why they are superior. The alternatives still end up being more popular, and there is no denying that there's sometimes an air of "those fools with their eBPF, while we have dtrace/ZFS/zones/etc" which toes the line of arrogance. I think it's pretty hard to have a career where you are constantly involved with software that is better technically, and have worse alternatives constantly "winning", and not be a little arrogant sometimes.