There are reasons… mostly that we have a legal agreement with dsruptive to make glass transponders (xSIID) with the modules supplied. Flex versions of those are not part of the agreement and it simply needs to be cleared.
The other issue is that the flex material around the module has to be thickened due to the thickness of the module itself… it is arranged such that it has a very large z-axis and it’s not fun to process these… I did it as a side project… just testing… but going into production… I mean sure maybe it’s possible but I dunno… maybe.