I have discussed this episode with several people here in the Netherlands, and after the initial shock that such a thing would happen we got down to why the attitudes were so different.

In a society where Health Insurance is mandatory and Liability Insurance is almost universal then the concerns of presented for not acting are essentially eliminated.
https://living-in-holland.nl/insurances-for-expats-netherlands/

The culture is also different, as an example each company is strongly advised to have staff trained as safety marshals. During the training I was told that we would not be held responsible for mistakes as long as we did it in good faith.
https://business.gov.nl/regulation/company-emergency-response-team-bhv/

It was interesting to see that you can be prosecuted for negligence if you do not assist.
https://nltimes.nl/2024/10/22/suspect-drowning-ghent-prosecuted-extortion-netherlands