No, he’s not described a death plug. The inverters only produce was it sees the sine wave from the grid.

If the grid goes down, break trips, or it’s unplugged, then it stops producing.

Calm down.

It can only produce electricity if it measures the right voltage coming in, it needs to sync to the net. They don't work in island mode.

But this is exactly how they are designed to work.

I didn't say that you should diy this but the sets described in this very article works like I described.

Here's a random one with data sheets and installation guide.

https://www.bauhaus.info/balkonkraftwerke/hepa-solar-balkonkraftwerk-set-premium-800-bifazial-0-mwst-/p/31970796

Perhaps you should delete your shitty and wrong rant instead?