Well, we have a naming issue (Hetzner also has Hetzner Cloud, it looks people still equal cloud with the three biggest public cloud providers).
In any case, in order for this to happen, someone would have to collect reliable data (not all big cloud providers like to publish precise data, usually they downlplay the outages and use weasel words like "some customers... in some regions... might have experienced" just not to admit they had an outage) and present stats comparing the availability of Heztner Cloud vs the big three.