The XML source does not validate the data in the XML file against the XSD

Important to know:

The SSIS "XML source" element check validation of the input XML file,

but – check only the structure, not the data!

That mean not valid data will pass this validation check!

Is it good or not?

Depend on the case.

But don't forget it…

https://docs.microsoft.com/en-us/sql/integration-services/data-flow/xml-source