Hello @Dheeraj ,
Thanks for the ask and also for using the Microsoft Q&A forum.
The maximum supported output response payload size is 4 MB.
Possible workaround is to restrict the size of the output or use pagination in the response, but it is very time consuming as you said.
But feel free to submit your feedback to ADF product team through ADF user voice forum. All the feedback shared in this forum are reviewed and monitored by ADF engineering team.
ADF feedback forum: https://feedback.azure.com/forums/270578-data-factory
Hope this helps. Do let us know if you any further queries.