On the one hand I thank you for the work you do against plagiarists, but on the other hand I think you should expose all the evidence you have now. I think it would be the most honest thing to do and would save the forum the most work.
Does something surprise you? This is an ordinary useless forum troll who sits with an alt account. He is scared to present his main account due to his cowardly nature. Most of his words can be safely divided by zero, since they have no basis whatsoever.
I would point out that people can (and do) report plagiarism anonymously via the report to moderator button.
I am not sure I agree with your stance, but I think he likely is hoping to get merit from his public reports.
He saw someone succeed by getting into one of the most paid campaigns, and immediately ran to look for violations from them in order to harm them as much as possible. I would not be surprised if after Dave F got into ChipMixer, then this troll ran immediately to look for plagiarism from him.
I can only speculate if what you are saying is true, and it may be true. However, there are some people who look for plagiarism by people that disagree with them, and/or that are critical of them.
Plagiarism had gone unnoticed and unhandled for such a long time that some people have weaponized it.