Does anyone see the downside that a little bug gets introduced, the concrete chips, the barrel dents, a cyber attack takes place, and suddenly your 120 meter tall stack of 35 ton blocks becomes a Jenga tower raining death into the Swiss countryside?
Not really. What are they going to hit? Presumably the realistic maximum impact radius of a failure would be fenced off (and wouldn't be that big - probably about the same size as the area fenced off for radio towers with guy wires).