BekBel
Adventurer
Do remember that by researching this technology you also had access to the Tournaments feature, including all its rewards. This also gave an advantage, including lots of Knowledge Points, Relics and Rune Shards that you wouldn't have had otherwise.
This may be, kind of, true for many of us. But I would point out that there are many newer players who probably researched Tournaments in the weeks, even days leading up to the change. Some members of my FS researched tourneys a week or two before the changes. They had no choice, they had to research tourneys to move along the tech tree. Some people may not have even had a chance to do a single tourney before the change - that is most certainly wasted KP and resources to unlock the research for such newer players.