i hope this stress test will accomplish something
Nothing that isn't already obvious.
Though I have seen a lot of fools saying how it's spam and it should be blocked.
Though none of them clearly realise the stupidity of that statement.
One idea was regarding address transactions back to themselves.
Right, (/sarcasm) that's really going to work, then the spammer simply needs to cycle through 1 other address.
If they block it at the level of 1 other address, then the spammer can cycle through 2 other addresses ... ad infinitum.
There's no lack of bitcoin addresses
You can have as many as you like.