This sounds interesting and twisted in some sense

1. A start up is validating a service provider to ensure that they are secure enough so that they can trust them before signing up for their service

2. The service provider is already trusted by so many big name companies who handed over their data, the customers data to them

Should it not be other way around?

On a different note, the finding is not just one off absolute, rather its a symptom which points to certain experience and expertise level for security practices. To be fair its hard to blame the start up folks, they are running against time and cutting corners is somewhat critical for survival for their business