This company has a track record of cheating on benchmark by training on test datasets. Take it with pinch of salt and try the model yourself.
That's a really bold statement to make without any references, could you by any chance add some references for us not in the know ?
I assume you will still stand behind the essence of your comment. In that case, it would be better to say "Based on my experience on playing with their models, I have strong reasons to believe that they continuously cheat on benchmarks by training on test datasets." You can then also add that this maps with what you hear from others in the field.
That's like all of them, bro. Don't hate the player, hate the game.