The only thing I saw in that video is that the time rules are in place. There's a reason why trickstars, a burn deck, tends to be topping in these new rules. Also you have people memeing in random crap like firecracker, using it on the last turn before the dual has to be ended due to running out of time.
If you were referring to dual links, which wasn't in the video, my issue with it is that yes it makes turns shorter. The problem is that duals on dual links if playing competitively can end in 10 seconds. With your opponent not getting a turn to play or not being able to play. woodland sprite burn for 4k lp, milling strategies against a 20 card deck decking the person out, cyber angels not letting you do anything after their board is established. Turns are shorter, but so are duals at times. Only extended if people are too stubborn to hit the surrender button and just watch cyber angels just annihilate their attempts to do anything. Or sylvans, or whatever the dual links meta is. a starting value of 4000 life points makes it really easy to otk people. Case in point, toons had a run as meta as all it takes is two direct attacks with toon monsters. And due to the crappier options for removal, and magic deflector usually laughing at the first attempt to blow up toon kingdom... Hello pain.
You think the normal game is bad, dual link stuff hyper inflates the problems with the normal game, and make them worse as removal options were limited for a really long time.
Also, I flip Ojama trio on your 3 monster zones and lock you out from doing anything sir. Next, I shall burn you to exactly 900 lp to kill yourself when you use dark hole to get rid of your own tokens.