I believe people are not that stupid and will quickly stop mining if they suffer thousand of dollars loss every month with no method to make profits. If you're trying to discourage people from solo mining or starting a new farm, you don't really have to make this thread since they will soon quit as long as it is no longer profitable for them. Not to mention there are dozens of threads talking about this same issue from years ago (you'll probably see similar points like yours from other users when a newbie asks if they can mine BTC with a CPU or a single ASIC, for example). CMIIW.
If you start right now, yes you will be profitable in USD only. However, you will be fucked up in terms of BTC. The only good time to start nowadays is to wait the halving to happen and price to double than start your farm.. otherwise, I don't see any other wise decisions as no one can prove it in terms of BTC so, mining isn't dead it just needs the right time to start.