Is it? I’ve never touched Facebook api, but it sounds ridiculous that you need to provide tax details for DEVELOPMENT. Can’t they implement some kind of a sandbox with dummy data?
WhatsApp takes bot spam very very seriously, and as a result, there is zero bot spam.
Before you can sign up to build a WhatsApp bot, you need to jump through a million hoops, and after that, every automated message template must be vetted by Meta before it can be sent out, apple style.
I'm glad of this, because unlike SMS and other messaging platforms, WhatsApp is spam free and a pleasure to use.
You can mock their API all you want for development and there are many pre-built options for that, but it you want to touch their systems, they're sending a very clear signal. You must be a corporate with an RBO. Seems prudent to me.