@Sovarius You can consider that, but its objectively misleading and false. The rules explicitly DO allow me to concede to someone to propel them into the top 8, or ID with someone to put us both in (at the expense of another player). The black-and-white rules-oriented approach leaves no question: Matt was 100% within his rights, full stop.
Saying that the rules do not work the way you'd like is fair. That's an opinion you can have. Most of your arguments are more along the lines of what you consider ethical within an event, not about how the rules work.