Paul Saccani

I believe that something in the order of 16 different isolators have been recalled, not all from shonky Chinese brands, but all made in the PRC.
With regard to Dolus Eventualis, that would not be applicable, as he genuinely believed (bizarrely, in my view) that he was alone on the premises and did not foresee a risk to anyone.  The standard is subjective, not about what an objective reasonable man might think about the actual facts.  This guy was a retired RSM I had known in the Army as both responsible and reliable, I was doing this job as a favour to help him out.  What he did was very out of character and reflected a lot of personal stress and sleep deprivation etc...   His wife had died, he had young kids to look after and a stressful job.  Yes, I did make some rather pointed comments to him indicating that I was not well pleased with his actions, but they were not delivered in a harsh tone.  Though of course the first one was a cry of "WTF were you thinking!".
I'm not sure about what American practice is with regard to drip loops and what they define them as.
Drip loops are a standard cabling practice that many neglect.  I use it for top entry too.  If using a conduit, you do tend to need a weep hole, otherwise you are creating nothing more than an S bend like a toilet, the water will eventually enter your enclosure.  Of course, if you use something like a Shepard's crook at the other end, that should stop water flowing down the conduit.  Drip loops also need to be used for cable that is not enclosed.
The other benefit of a drip loop is that it provides stress relief for a cable.   The reason that electricians often avoid their use is simple, it uses more cable and therefore costs more money.  You also have to consider in these DC wiring cases that the extra length will increase cable losses slightly.
If you look at some of the pictures in that web link, you'll see cases where wall mounted isolators have had top entry, no drip loop and have filled up with water causing failure.  Most electricians are lacking in day to day experience with low voltage DC (below 1,500 VDC), though as I recall the training differences between Western Australia and SA, in SA they are certainly trained for it - it just isn't day to day for most in both countries, though of course, this solar business has changed that.