Oh god, you guys are sooooooo silly.
First of all who really cares.
Second of all, Stiga makes plenty of blades that he can use.
With Wang Liqin, there was an obvious reason why he uses a Stiga Clipper with a DHS handle. He was always using a Clipper and then DHS made a blade for him and wanted him to use it. It was a Clipper clone. But, he liked the real thing better and so got a DHS handle put onto a Clipper. So he could keep the nationalist pride of using DHS and being sponsored by DHS but continuing to use the racket he was using.
If Fan Zhendong was not using the racket he says he is using, he could choose any other racket. Stiga has plenty of rackets that have materials similar to Arylate, and he could easily have Stiga make him a racket he wants to use. Or, if he really wanted to use a Butterfly racket like Viscaria, he could easily just get Butterfly to sponsor him. There would be no reason for him to pretend.
Look at Zhang Jike. They have several signature rackets for him at Butterfly. But he keeps using Viscaria. He does not have to pretend. If Fan Zhendong wanted to use a Viscaria, why wouldn't he just use one???????
I think this kind of speculation is foolish unless you have real proof, like Fan saying it himself, or a rep from Butterfly attesting to the fact that he is using a Butterfly blade with a Stiga handle. But in interviews Fan says he is using all wood because he listened to one of his mentors, Wang Hao, recommend that he use an all wood blade. Why would he just flat out lie.
And I have hit with the Infinity blade. It is a great blade. It is as good as any blade out there. And it has that classic Stiga crispness that so many players on the Chinese National Team like so much.