The "recently been proven" was in direct reference that they could be destroyed, not on how they can be destroyed just that they could.[1] What says that the relay destruction is any different aside from the method it was destroyed by. We have no information on how or why the Crucible/Catalyst makes their destruction any different. We don't know whether Earth was destroyed by the Citadel exploding because we have no shots of Earth post-Citadel explosion. I am not attacking you, I am attacking your arguments and counter arguments, so if you could please refrain from attacking me it would be appreciated.
[1] Destruction of a Mass Relay portion of the Desperate Measures codex entry
"Destroying a mass relay to stop the Reapers' advance is infeasbile.
Although it has recently been proven that mass relays can be destroyed, a ruptured relay liberates enough energy to ruin any terrestrial world in the relay's solar system. It would take too long to evacuate the millions or billions of people living near each relay, and the Council is unwilling to sacrifice that many lives when combat stands a chance of saving them. Even if a garden world were to survive the relay's destruction, the Reapers have infinite patience. They traveled out of dark space using conventional FTL--travel within galaxy is not an insurmountable barrier."