Wish I'd thought to try this before 2.99.18, but it turns out implementing NDE filters on layer groups was very easy. These are useful because they enable an adjustment-layer-like workflow where filters can be applied to multiple layers at once.
(@pippin, you might find this interesting!)
@CmykStudent @pippin Damn, GIMP gets better and better as we speak
@CmykStudent @pippin do you create GIMP tutorials on YouTube?
@davenjogu @pippin I haven't yet, but there are plenty of great artists who have!
@CmykStudent @pippin well, I wish you would make a few explaining the in-depth working of GIMP