Do not use it.
In near future there will be bridges or api’s to use Whatsapp through other Messenger Apps. Cause since this month in Europe Meta and other big Gatekeepers have to be open. Just Signal do not like it.
Because personal i think that Meta use the decrypted Client Data to train an neural Network for a better personalization about indirect questions for avatar optimizations. Like a digital twin of yours, in a Computer reacting to 99% like you to asked questions, or predicted behavior like you do in real.
Good Luck