It's a vanity item, like a Rolex watch, and its existence is not for actual utility.
Utility-wise for the cost, it's not outstanding compared to regular calculators. If you spend enough time with S100X for the cost to be justified, then you are wealthy or you are spending way too much time at the calculator and should reconsider your workflow, e.g. using a spreadsheet or Python script instead, and those things are cheaper than this calculator.
Nothing wrong if anyone wants to buy it. But technically there is nothing special here, just the physical appearance/build.
This article is only saying that ZFS can mitigate disk data corruption caused by bad RAM, mainly through using checksums, not that it can completely prevent disk data corruption.
Also, it does not talk about the scenario where the in-RAM data being corrupted does not come with checksum. For example, data received from the network by the NFS/SMB server to be written to a file, before it gets passed to ZFS. This data is stored somewhere in RAM by the NFS/SMB server without any checksum before it gets passed on to ZFS. ZFS does not do any work here to detect or repair the corruption.
So, ZFS does not prevent on-disk data corruption caused by bad RAM, and only mitigates it. Using ECC RAM results in a huge relative reduction of such corruption, even though some people may consider the non-ECC probability to be already low enough.
Hanlon's Razor is such an overused meme/trope that it's become meaningless.
It's a fallacy to assume that malice is never a form of stupidity/folly. An evil person fails to understand what is truly good because of some kind of folly, e.g. refusing to internally acknowledge the evil consequences of evil actions. There is no clean evil-vs-stupid dichotomy. E.g. is a drunk driver who kill someone with drunk driving stupid or evil? The dangers of drunk driving are well-known, so what about both?
Additionally, we are talking about a system/organization, not a person with a unified will/agenda. There could indeed be an evil person in an organization that wants the organization to do stupid things (not backup properly) in order to be able to hide his misdeeds.
Maybe or maybe not. You may need to build up your trading infrastructure first, which entails among other things low-latency connectivity to different venues, negotiate good deals with brokers to get low trading fees etc. If it were that simple, all the quants would be working for themselves. Trading is not just about having good prediction. Also if you publish/share your algorithm, people will copy it and it will lose its edge.
If you are really good so that whereas others can only predict the future 0.1s but you can predict the future 5s with the same accuracy, then sure, you could trade from home over the Internet, and if you are much more accurate than others, especially when the market moves a lot, you don't need low fees to be competitive.
Utility-wise for the cost, it's not outstanding compared to regular calculators. If you spend enough time with S100X for the cost to be justified, then you are wealthy or you are spending way too much time at the calculator and should reconsider your workflow, e.g. using a spreadsheet or Python script instead, and those things are cheaper than this calculator.
Nothing wrong if anyone wants to buy it. But technically there is nothing special here, just the physical appearance/build.