Rofl Poongko wasn't exactly going to stay for Tekken long, he was going to play the game casually for the most part.
Regarding Akuma, the ones in orange are traits that had to be 'Normalized' (inner abilities that shouldn't affect the way he plays or in some cases, you could call it a nerf but not really). The ones in red are the factors where he didn't exactly needed to get nerfed but rather making the game harder for the character for necessarily no reason. (Cannot speak for the ones in white according to them.)
Akuma:
All of Akuma's specials now all do 1 chip damage on block.
Hadouken (qcf+1 / qcf+2) damage decreased. (YES, 3D fighting shouldn't be focused on this.)
Shoryuken (f,d,d/f+1 / f,d,d/f+2) changed properties on hit when colliding with a power crush, damage on the move is also decreased.
Demon Flip 1 damage decreased.
Demon Flip 4 damage decreased.
Demon Flip 1+3 / Demon Flip 2+4 frames after it were made worse.
Air Tatsus (Air qcb+3 / Air qcb+4) plus frames on block made worse. (He's already *unsafe*, no need to make it worse rofl.)
Standing (2) damage decreased.
Standing (4) damage decreased.
Standing (f+4) damage decreased.
Standing (d/f+1,2) pushback on block shortened.
Standing (d/f+2,1) 1st hit damage decreased, 2nd hit plus frames on block improved.
Standing (d/b+2 / d+2 / fc 2) damage decreased.
Standing (d+3) properties on hit at the tip with an opponent changed, damage decreased. (?)
Sweep (d+4) on hit knocks down the opponent further away.
Standing (b+1) damage decreased.
forward,forward 4 (ff+4) frames on block made worse.
While Running 1 (fff+1) bug where it becomes unblockable on an opponent already guarding a different move is now fixed.
While Standing 2 (ws+2) frames on block made worse.
Tsunami Kicks (ws+4,4) frames on block made worse.
Neutral jump 2 damage decreased.
Neutral jump 4 damage decreased.
Forward jump 2 damage decreased.
Forward jump 4 damage decreased.
Fixed a bug where Akuma's sidethrows will not come out during sidestepping/sidewalking.
To be fair, that Yoshi player was getting caught by setups and not by Akuma. The issue here is that some of the players using Akuma were familiar with Yoshi minus Poongko who's playing by most reads. Yoshi players as far as I know, roughly accumulate their situations with characters in the roster but simply had no strong idea on how to approach Akuma because he's "new". So what do you do? you either buff Yoshimitsu or absorb the knowledge, not the other way around. Instead, Yoshimitsu got nerfed for who knows why..plus Lars was improved when he necessarily didn't need improvements.
Just for the sake of reference, there is a huge difference between getting proper nerfs as well as catering. FGs suffer a huge stigma in regards to patches as well as players showing their true colors on what is necessary or not, catering shouldn't be a thing for players because the goal is to make the playing field of both sides suffer equal terms, one side should not be granted extra privileges to make things easier for them aside from diversity on which character they like for proper choosing.
With that aside, there are definitely some stuff that Akuma needed to be checked and rage situations were definitely one of them along with wall damage scaling that leads to death and that ridiculous combo that can be performed via general TAS (Tool Assisted) that wouldn't exactly be possible in human standards.