The tank changes as presented range from benignly useless (eg. Amumu, Sion) to actual nerfs (eg. Nautilus, Leona)
The only changes we're seeing towards actually nerfing burst damage in general is nerfs to Electrocute and a few other runes.
It's like burst in general is going down by like 1% and the amount of tanks picked in games might go up by 1%.
The game will still be just as frustrating because champs with easy gap closers and easy, reliable burst will still be picked in most games.
IDK I just don't see any actual effort to fix the problem. It's like Riot is just trying to give concessions and hope that people pick different champions instead of actually fixing anything.