In my country there was some media coverage about these scams a couple weeks ago... Apparently the amount of scams have reached the threshold needed to attract the attention of the press and the police now.
If i read your story, it's the exact modus operandi described in the media, so i can pretty much guarantee your friend was scammed.
Like it's been suggested before: stop sending them money, go to the police, consider your funds to be lost.
BTW: these scams have NOTHING to do with the actual crypto community... Scammers just pick whatever technology is "hot" in the media right now and use buzzwords from this technology to scam unknowing victims. If bitcoin wouldn't exist they'd find an other angle to scam people using more or less the same methods they're using right now. It's a shame these dirtbags are dragging our community trough the mud, ruining our reputation because we get linked to them... They're just thieves that use our community fame to steal from (mostly) older, non-tech-savvy people.