haha, will they just keep locking new threads?
Yes, that's what they keep doing. The only testing they carried out was to play a game of FIFA between themselves and it worked. They looked at some traceroutes but these didn't tell them anything, even if they knew what they were looking for.
From these tests, they decided there was no fault even though people have been reporting problems for years.
What they didn't do was monitor anyone's connection who reported a problem.