I am afraid that such comments do nothing to prove/disprove his flying efforts.
The fact Richard Pearse tried to build workable planes is a reality. However, his alleged 1903 flight is a pure myth, something that does not agree with his own declarations. Also his claimed 1909 flight lacks witnesses. Inventors, in general, pretend they did various things. We can not simply believe their word.
If someone show you a plane, like in the three pictures I have already posted, and says he flew it for 100 meters, do you believe him?