The Small Trees mod is an extremely helpful add-on that you can install into Age of Empires that, uhh, makes all of your trees smaller. In a matter of just a few weeks, the vast majority of top-level players (and casual players as a result) have decided to ditch the previously popular ‘Small Trees’ mod in favor of a couple of new mods that give a nicer overall effect.
If you have no idea what I’m talking about, it’s pretty simple: it’s possible to make every single tree look the same as one another, regardless of the map, so that everything looks consistent in-game. If you watch popular Age of Empires 2 players on Twitch or YouTube, you may have noticed the new identical tree meta.