In case you missed it, in 2019 card game Uno decided it was time to set the record straight on whether, or not players could stack +2, or +4 cards and they said no, you can't. This declaration clearly left many frustrated as it is a pretty common strategy.
People were understandably up in arms.
Uno clarifies that if someone plays a +2 or +4 card the next player must draw that particular amount of cards and skip their turn. No stacking.
Keep playing by your own rules, though, we won't judge.