"Even if we consider "Wagner" to be "neo-nazi" with no evidence what so ever"
Well, this sure looks like an evidence of Wagner's commander having a neo-Nazi tattoo [0][1]. Besides Utkin's personality there doesn't seem to be anything else.
Essentially lack of denial. Weird mix of 'Utkin was undercover among Nazis' and 'to fight Nazism one needs to try it himself'. By the way, Bellingcat claims that Utkin has a minor position in Wagner.
I'd imagine if they recorded an audio answer they were not being serious, so makes sense you found it weird. Bellingcat claims a lot of things with no evidence, it's not a serious source IMO.
Well, this sure looks like an evidence of Wagner's commander having a neo-Nazi tattoo [0][1]. Besides Utkin's personality there doesn't seem to be anything else.
[0] https://t.me/concordgroup_official/729
[1] https://t.me/concordgroup_official/736