Since everyone is being honest, I didn't like the video
First of all, tips 5 and 4 say that we should Increase bet sizing and play more hands, but then tip 1 says preserve your stack and stay smart.
Personally, If I see a big stack opening 50% of hands with 4x bets pre-flop (based on tips 5 and 4) I would so often punish that with re-raise shoving with almost any A, and almost any pocket pair, as I believe it would be far ahead of 50% opening range made by a big stack. That means, such play style is exploitative and therefore not consistent with tip 1 - preserving stack and playing smart!
At the same time, I do agree that big stacks should be more aggressive, especially near the bubble but then comes the video that is definitely not a show of playing aggressive with big stacks.
When everyone folds to SB who is the biggest stack, raise is mandatory! Never ever should SB limp here, while sometimes might fold depending on the opponent! And here SB actually should increase the bet size to about 4x, as 56s has good playability post flop, and we don't really want BB to call where we have to play OOP post flop.
If this video didn't have shown cards (56s) I would still guess it was a pure stone cold bluff on the turn and river. Just the way hand was played. If I am the BB player, I am crushing this big stack from the SB, knowing how the hand was played, mainly cause of that limp pre-flop which is the key here.
All in all, the video is not really a good example for big stack power play, and couple of tips are not in line with each other
This is only my honest opinion, no hard feelings I hope