As an American I find it very odd that they blame the angles of the roads for making it dangerous. Until recently that intersection had no stop signs. One road had a yield, meaning most of the time no one stops in any direction, on either road. That gets drivers in the habit of not stopping.
Maybe if varies by state, but I grew up in a rural area of California, but every intersection I can remember has had at least one road required to stop (either a two-way stop sign, four-way stop sign, or traffic lights).
I get that stop signs are nearly illegal in the UK and some other parts of Europe, but that is the problem. In the US a driver on the minor road has to stop, look both ways, then proceed. It is to much safer than the driver on the minor road getting in the habit of not stopping and just plowing through a road that has the right of way.
"Plowing through" yield signs is extremely rare and only a common problem when view lines are exceptionally open like in the linked example. Good road design/signing guidelines include those open sight lines in the decision tree, mandating view blockers, swerves or, as the weakest option because people will still ignore it when they feel safe, stop signs where necessary. As a person who learned driving in Europe the American fixation on stop signs seems excessive (particularly the four way).
On this intersection the cyclists that got hit were on the main road, meaning they wouldn't have to stop.
If a cyclist on the minor road had a clear view, slowed down down, and looked both ways, they wouldn't need to come to a complete stop. A cyclist treating a stop sign like a yield sign is pretty only endangering themselves. A motorist plowing through a yield sign that should be a stop sign, or plowing through a stop sign, that is dangerous to other people.
This can be solved with the Idaho Stop (https://en.wikipedia.org/wiki/Idaho_stop), although in they absence of common sense you'd probably need a "really stop" sign for dangerous corners.
Maybe if varies by state, but I grew up in a rural area of California, but every intersection I can remember has had at least one road required to stop (either a two-way stop sign, four-way stop sign, or traffic lights).
I get that stop signs are nearly illegal in the UK and some other parts of Europe, but that is the problem. In the US a driver on the minor road has to stop, look both ways, then proceed. It is to much safer than the driver on the minor road getting in the habit of not stopping and just plowing through a road that has the right of way.