I mean really, as long that everything is wired correctly, I don't see much danger here. Other than the danger of looking like a mad man for massacring your case of course. Lol
but there's no fucking with electrical here? it's just chopping a corner out of the case. there's no reason to believe the psu connectors aren't intact and used as intended.
edit: now i see the psu case is open and taped together. uh oh.
Is the psu case open? Looks to me like the thing on the far side sticking up is the metal from the top of the PC case that's been bent up to make space for the psu.
That's what it looks like to me too. The case has been bent up, and the PSU has been taped to it. The PSU doesn't seem to have been tampered with at all.