I am not sure that what Lightzy is saying actually applies to Alpay. It may apply to a lower level player. But, it does not seem to apply to what I have seen in the footage from Alpay.
A lot of what tactics are about is giving you an easier ball to open with and take over the point. That is also why serving is about deception. When you serve, if you can get your opponent to push and make a slight mistake, like the ball is an inch or two higher than they wanted, you can open with a much stronger shot and take over the point. If you can return the opponent's serve in a way that makes it so you can get your opponent to give you a weak return, you can take over the point.
If you can stay closer to the table you can play bigger angles and control the table.
If you are going to back up, you should be able to do it and make the opponent have to take uncomfortable shots.
What Lightzy is talking about sounds like info for a more beginner player. Alpay has decent technique. He just looks like he has no idea what he is trying to do when he plays. He simply looks like he is keeping the ball in play and hoping the other player messes up. Which could work on a weak player. But it will not work on a player who is at a remotely high level.
Against higher level players you need more than just hoping to find the opponent's weaknesses. You need clear plans for points and methods for setting yourself up and techniques for getting your opponents to take weak shots to give you easier opportunities to control the table.
An example: A very simple tactic that a player like Ma Lin used was that he would serve spin/no spin. He would mix short serves between heavy backspin and "no spin" (really, very light backspin) and by doing that, and showing extremely heavy backspin that the opponent had to respect, he would use the short no spin serves to get easy balls to attack. The fact that the opponent returned the serve an inch or two higher made it so Ma Lin could use his third ball attack to end the point. If you can serve short, heavy backspin, then short no spin serves can become a very effective weapon.
Whereas, Alpay is pushing long serves. He is pushing long pushes. He has no third or fifth ball attack. All his serves are long without him thinking about what he could use the serve for. He does not attack his opponents serves or backspin shots. He waits for the opponent to open and backs up and puts easy balls back over and over simply hoping for the opponent to mess up.
He actually does need some way of thinking about the actual structure of the points. Even if he was backing up and had the plan to lob (fish) and make it so the high balls were hard in some way like corkscrew sidespin, that would at least be a plan. But he has nothing but the experience of playing guys who are not good enough to dismantle his lack of strategy.
And yet his technique is good enough that he is still a decent level player.