Considering that Peter Schmidt the man accused of sucking another man’s penis admitted that he, Peter Schmidt, did indeed suck a penis I’m not sure what other evidence you need?
Would you be more likely to believe it if self-admitted cock gobbler Peter Schmidt slobbered all over your knob?
If he sucked my cock, yes, I would be more inclined to believe it than some anonymous meme on a site stating a video is circulating of him sucking a cock. I guess all you need is the meme.