I agree. This is just a hint of a possible link. It could also conceivably be the rantings of somebody psychologically affected by his experiences in the Gulf War.
Even that, however, is different from the image we've been presented with: a Timothy McVeigh consumed by what are characterized in the media as "right-wing militia issues" (Waco, the 2nd Amendment, the IRS, etc.). If he was motivated by Waco to kill hundreds of people in what he regarded as a military attack, for which he was unrepentant to the end, why didn't he write about the deaths of the Branch Davidians when he had the opportunity? Or, if that was too emotional for him to write about (given his own complicity in the deaths of so many innocents), why not one of the other issues that presumably would have concerned a member of the "patriot movement"?
When you combine this pro-Iraq diatribe with Terry Nichols' trips to the Philippines, with the reported sightings of a Middle Eastern John Doe #2, and with the possible use of the same Oklahoma motel by Timothy McVeigh and, years later, some of the 9/11 hijackers, it starts to be a web of circumstantial evidence which invites further investigation.