Super Smash Bros. Ultimate: Joker's Final Smash Crashing Some Switches

Super Smash Bros. Ultimate's latest DLC character, Joker from Persona 5, is freezing player's Nintendo Switches when they use his Final Smash to end a Classic Mode match.
This issue was confirmed by IGN's own Zachary Ryan, as his Switch froze three times when finishing a Classic Mode match with Joker's Final Smash. There are also many other examples, including a Reddit thread posted by CubingVainGlory, that show the freeze happening.
It appears this glitch is only occurring in Classic Mode and o