You can use the following approach:

In the ConfigureFields script, a function is defined to parse the timezone-aware datetime string to a datetime type object.
The reference datetime string is then parsed.
The output metadata are defined for an outpuut field to hold the reference date and the comparison results.

Then in the ProcessRecords script the variables are assigned to the output fields. The compare_result field uses the greater than comparison from the built-in 'null safe' functions module.
If you only want to output the records where the comparison is True you can modify the logic in the ProcessRecords script. See the attached example.
Attached files
Transform_Node_Compare_TZ_Aware_Dates - 7 Dec 2021.lna