Using a very anecdotal instance, for a very standardised play pattern in a match up to base opinions of the game in general is a bit silly (especially as both players were just JOKING AROUND). I'm going to kill this thread because not only do I not promote a thread which promotes flame-baitey/sensationalist responses, it comes with very little in terms of thesis or argument. If you want a thread like this to be promoted you'll need a lot more substance to come with it.
Every character has to play like this against ICs: the risk reward of IC's dash grab significantly outweighs every thing else in the game by massive, MASSIVE amount. A 9 frame, 2x sword length, multiple hitbox stock taker on success forces people to play this way.
Why is there little risk? Because characters aren't designed to hit both characters, and if you don't hit both characters, you're likely to get grabbed, if you hit one and not the other and get grabbed you can be solo chain grabbed long enough for nana to catch up and take your stock.
Standard defensive options such as shielding, spot dodging or rolling are negated by the nature of grabs, the length of the dash grab and the multiple "grab boxes".
Approaching from the air is not as potent as it should be due to Ice Climbers having disjointed grab hitboxes above their heads.
Nothing else exists like this in Brawl, nor any other smash game in the series.