I understand that with all the recent changes to the modding systems minecraft had in 1.21.3 might make updating difficult, but the way i see it, the sooner you update the older stuff the easier it'll be to update in the future (plus i really love this mod and would love to play it with the pale gardens)

On the surface this seems like a good thing to do. However, unlike a lot of mods, Dynamic Surroundings has tendrils into areas of Minecraft code that normal mods do not work with (like the sound engine). Microsoft LOVES changing things around in these areas and creates a lot of work for me. In the coming days I will be looking at updating to the latest 1.21.x release.