IPA size is too large

Hi,
I did a test, create a new empty project, check the vuforia support options, and then packaged into IPA package is installed on the iPhone, has about 80 M, and then I according to the method of optimization of IPA package online, all tried only optimize the 5 M, I analyzed the IPA inclusions in the size of the folder, find frameworks folder is 32.5 M, Why is there such a big vuforia.framework?

Best,
Icey Denis