Company behind UNO admits they have no idea how to play their game

Mattel could just print whatever the hell they wanted onto cards and release it without rules and people would find a way to play them.
- Uno is just a corporate spinoff from Mao anyway. I believe thats why they don't like house rules, once people go back to having fun with cards making their own rules they no longer need a product.
  
  Do you mean Mau-Mau (TIL that's the English name)? But yeah I'm surprised Uno sells.
- Would be fun
- Recently got a new uno deck, it literally has blank cards for you to make up your own rules.
  Their new official rules did say you couldn't stack the +2/+4s, but we played that way anyway and now my neice won't play uno anymore (she's gotta learn how to lose lol)

Who actually plays it that wrong way, allowing stacking of +4 and instead of taking four and being skipped you place and +2 and the next person get six?
The rules are not ambiguous. This sounds like a silly "house rule" at best with clever marketing being more likely.
- It is a house rule and its pretty popular.
  It potentially adds a layer of strategy where you should/could retain a +2 or +4 as a defensive measure.
  Personally i like this house rule as it makes for more surprices in play when you can defend yourself against those cards.
  It does make the game potentially longer and more unpredictable, so like all house rules its a matter of taste.
  
  It makes the game exciting for the first two or three times the strategic thing happens. Then it is extremely tedious and boring. I once witnessed a game with all the house rules at a party. People just started to look around for someone to give their hand to, as they were missing the rest of the party. The game went on for over two hours at which point none of the players left had started the game. Eventually everyone just placed the cards on the table and walked away. It got just too mind numbly dull and mechanic. There's videos online of uno games that lasted over 6 hours because of these rules, and they're absolute torture.
  I have nothing against house rules, as long as they are balanced and fun for all players. But the typical house rules are created by overtly competitive players who want to optimize the fun out of games and maximize their potential for being cruel towards other players.
- A lot of people do, obviously, or this wouldn't be a thing.
  
  Click bait articles have a habit of over emphasizing things to garner attention. Hence why I suggested it was a marketing ploy.
- I've never played those rules, the only version I have seen allows you only to play a +4 on a +4 or +2 on a +2, no mix and matching.

Played this recently and it turns out the reverse card does significantly less than its pop culture status would suggest.