>>14553321I'd certainly argue that the Sinnoh games were indeed throwbacks to Johto, especially with all of the plot relevant references within their plot.
Lake of Rage Gyarados, Jasmine in Sunnyshore, the Hiker with the Togepi egg from Professor Elm, etc.
Not to mention, a lot of the new Pokemon from Gen 4 were evolutions from Gen 2 such as Yanmega, Mismagius, Honchkrow, and Togekiss.
Lastly, it also included some game mechanics not seen since Gen 2, such as the day/night cycle, and such.