I can't believe I actually have to argue this... strain-reliefs on a thing made of moving wires is nothing less an obvious necessity, FFS.
We all know the ol' tinkerdwagon can agitate with the best of 'em... and I do love me a joke. But these things are defined as "hobbyist" and "experimental prototyping" for a reason; they simply are not inherently safe.
The technology on the whole is half-finished at best; every last component of the things has a dozen ways it can fail spectacularly, and every last part of the thing is full of fire, just looking for a place to get out. Even the best-known names have a history of shit burning up; Hell, there are two safety advisories for things than can catch fire on my brand-new CR6-SE, and that's aboot as close to turnkey as you're going to get in this class of printer.
We STILL haven't even established a mandatory thermal runaway protocol; manufacturers are still today shipping units with it disabled in firmware, and lets be frank... a little software is hardly a proper replacement for at least a single thermal fuse, which is required even on a $8 hairdryer.
So please, don't be so flippant... it encourages a careless attitude in those playing along at home, and the odds of a printer catching fire are a helluva lot higher than being struck by a meteorite, or lightning, or a car, or even getting free money from the ATM.
Cheers,
mnem