I don't think statcast publishes arm strength for all fielders. Perhaps just outfielders/catchers, where it's easier to get consistent top end readings (infielders are almost always throwing off balance, on the run, etc.)
It seems absurd to think that Didi and Biggio would be even close, though.
https://www.mlb.com/video/statcast-gregorius-laser-throw-c1035872983
I do think this idea that Biggio has a noodle arm is stupid and I don't know where it comes from.
It's possible that Gregorius' TJS took a bit of his arm strength, I guess? But that generally bounces back.