This is something that has haunted me from the start that I used minecraft forge mod loader. When the mod folder contains mods that are supported in a different version of minecraft, the game crashes and I need to delete them all. So that also means that I can't play forge on different clients if they are different versions. When there is a fabric mod installed, it is a different story. The game gives a message that the mods are not supported, and then it continues to work without them. I would like this to work in versions too. This will save a lot of time and frustration and also makes it clearer for people who doesn't know you have to get the right version for the right loader.