He was Gunn's best friend, who was grooming a child at the same time that Gunn was making "edgy jokes" about pedophilia on Twitter and going to "ironic" pedophile themed parties thrown by said best friend, dressed as a priest. Any serious person would question what Gunn knew, and when he knew it.
Even at the hight of metoo movement, when people felt at their most empowered to step forward and tell their stories, nobody had anything negative to say about Gunn. Not even something like "he watched and did nothing when a bad thing happen". You are trying to force smoke from a lack of fire.
Nobody had anything negative to say about Bill Cosby either for 50 years until his conviction in 2018. The fact remains that James Euringer groomed a child while at the same time James Gunn was making pedophilic dogwhistles on social media, attending pedo themed parties and doing drugs with the guy
Yeah, and the minute it became socially acceptable/easier to speak up on wrongs people more powerful than you did to you, Cosby got exposed. If people know about Euringer's crimes, they would also know, if Gunn was ever involved.