A few thoughts to share:
@Takkyu_wa_inochi did an awesome job finding it on the list of ITTF approved rubber
@Scarfed Garchomp did an awesome job identifying it as 388D-2 green.
But to be honest, the photo is a bit blurry. Maybe we are 60% sure it is 388D-2 green?
The interviewer seems to be affiliated with the tournament director. So why not show him the blade?
Since the video showed Iba Diaw getting upset about the green rubber, I hope most likely the tournament director and umpire did check the rubber and found it to be "green 388D-2" and left it be. For click bait sake and for the video to go viral, they did not show the director or umpire check the rubber.
However, knowing how tournaments are run in the US, I don't think the tournament director checked. He seemed to just want to appease Iba Diaw and just "move on" to running the tournament. After all, the interviewer on the video is definitely associated with the tournament director so the director has access to his video and put it on YouTube. So we know the answer here.....
As for what Tony said, I assume the former CNT players are retired. If she were playing in the US and at her retired level, at best she gets a few sheets of free Dignic 09c from Butterfly IF there is a Butterfly sponsorship. So I doubt that is the reason.
People also said that players are very secretive about Ai Fukuhara is very secretive about her long/medium pips' identity. Yeah, she was playing at the top top level. For this former CNT player who supposedly play 30 minutes each time, three times a week, there is zero reason for secrecy. You think any potential player playing her in the tournament would intentionally go out of his or her way "hire" a training partner to slap 388D-2 green on one side and ask to "practice" against that rubber? No chance. the amount of prize money in the US tournaments is paltry. How do you even pay someone to slap a rubber like that to practice against you ahead of time. Finally whoever practice partner it is, cannot use 388D-2 green as well the as former CNT player anyway.
So a) I just would like to see a more clear picture to show it is 388D-2 green and not some backward rubbers we see on Aliexpress, 2) I agree that the way she uses the green rubber to block looks like a legit rubber. Old rubbers with too long of the pips would distort the ball projectory much more severe and 3) I still feel sympathetic toward Iba Diaw.