Careful planning in advance is crucial for any build. Now in my mid 40s, having been watercooling since the late 90s, custom building before the days of social media and the infancy of youtube, I can assure you I do not pass negative comments lightly, over the years sometimes I am in shock at how terribly flawed designs of coolers and cases have been. Feedback is crucial, critique is necessary, without it, there becomes a disconnect between consumer and company.
It is rather surprising that you would go off on a tangent such as "do we also have to plan struts for the different cases" as that is an absurd point to even consider and has nothing to do with the perceived shortcomings of the engineering in-hand of said product.
We are talking graphics cards built upon a 6-layer PCB process, especially these 3090 cards where everything is so tightly crammed together. The initial block weight itself should be supported better than just relying on the rigidity of the backplate and cooler across two screw points, in-effect placing more load on the card itself. Even in the case of the two crucial load points > those screws provided are exceptionally thin (any material defect in the screw itself would lead to much quicker failure than if compared to a thicker screw).
If we look at the standard FE cooler, it is clearly screwed into the bracket with multiple screws, all the screws used by the manufacturer of the card are thicker.
Now let us look at the way other manufacturers are supporting their aftermarket 3090FE coolers, for example consider this cooler by bitspower:
In green, we can clearly see where the additional support is provided. This particular cooler is within the same price-bracket of the alphacool equivalent, yet it comes with a bracket, plus the additional support in the mounting design. If we look at the higher cost blocks such as EK's Vector FE and the Mobius, they also physically screw the block into the bracket. Also looking at the user-manuals for the different coolers, they are all using screws that are 'thicker' than what Alphacool is using.
In summary, would we not prefer to see companies do their best?, take customer concerns into consideration?, because if one customer raises an issue or more, you can be sure that particular issue(s) may have been noted by countless others who chose not to waste their time raising their concerns, instead they choose to move to another brand on future purchases.
Constructive critique of a product means someone cares about a company, especially when coming from a long-term customer, because we would like the brand we love to be the best it can be and not fall short in the ever-competitive market it sits within.
Looking back at history, Aquacomputer were the top-dogs out of Europe, and Alphacool were the close second. These days Aquacomputer doesn't focus as much on supporting the latest cards quickly, possibly because they are focusing more on the overall loop and control of loop rather than individual waterblocks. EK came into the market with great prices and top performance which put the others against the wall because as we know when more players enter a market, it is always great for consumers becauses now prices tend to become more realistic due to competition. However, lately I have noticed a drop in quality across the board, maybe it has something to do with the pandemic, who knows, what is clearly evident is that most brands in the watercooling segment have been hit hard by quality issues of late.
My particular case of a missing standoff is a very small issue in the grand-scheme of issues hitting consumers, one only has to browse reddit for a few hours to see the nightmare of issues affecting the community.
Once upon a time, over-engineering was the gold-standard of german-engineering, now it seems it is all about cost-cutting and average quality control, a rather unfortunate state-of-affairs. If all it takes is to slap an extra 20 euros to produce a gold-standard product, then companies should do it, rather than try to undercut the competition by making their products more attractive at a lower-price-point, because remember, it is the real enthusiasts who notice the cost-cutting the most, and they are the truly loyal customers.