Anyone know if these thin PSU extensions are safe?

I found these 90 degree PSU adapters on AliExpress. I was interested in them as opposed to the normal ones you see in cases because they save almost 2cm of space that would let me fit an SFX-L PSU relatively comfortably(or an ATX with a really tight squeeze!). Just wanted to make sure they’d be safe, it says in the description that they are rated to 2500w, but I’m not an electrical engineer so I have no clue if that’s even reasonable or possible.