The gelatin covering the board does serve a purpose--it helps with vibration, among other things. It's called a potting compound, and you'll find it around electronic components in other high-vibration applications (automotive, power tools, etc.)
Don't know why LG does that when Miele only has a dedicated compartment containing the bare motherboard + service manual in plastic bag
Potting is less expensive than designing an entire suspended/isolated container.
This is the subject of this thread. How much "less expensive" you get on a $3~4k machine where the competition is $500. To compare with well built machines going for $3~4k in the 50's