Applicability of GST on rent payment to AOP

Payment of rent of a commercial space are payable to AOP (Association of Persons) with six members.Annual rent amount is Rs,36.00 lac (apprx) 

The landlord (AOP) demands that since the proportionate rent amt to each member of the AOP is less than the threshold turnover amt of Rs.20.00 lac no GST is applicable as well the AOP is not required to be GSTN registered.

Is the stand of the landlord is legally right ?

Please advise