I'm not sure if it's government restrictions preventing people from making calls on Whatsapp.  I have lots of family in Jordan, and some of them can make calls on Whatsapp, while most can't.  I think it's one of the bigger mobile phone plan carriers (Orange?) that's limiting phone calls on Whatsapp, while the smaller carriers don't seem to have those restrictions.  What's funny is that the ones who can't use Whatsapp for calls can use Facebook Messenger to make calls, even though both apps are operated by Meta.

If privacy is a must, neither of those apps is recommended.  Even though Whatsapp claims phone calls are end to end encrypted, they're still routed through a centralized server and the encryption isn't controlled by the end user.

All my contacts in Palestine can use Whatsapp for calls, which wouldn't make sense if the restrictions on voice calls was initiated at the government level.

I'm not sure if it's government restrictions preventing people from making calls on Whatsapp.  I have lots of family in Jordan, and some of them can while most can't.  I think it's one of the bigger mobile phone plan carriers (Orange?) that's limiting phone calls on Whatsapp, while the smaller carriers don't seem to have those restrictions.  What's funny is that the ones who can't use Whatsapp for calls can use Facebook Messenger to make calls, even though both apps are operated by Meta.

If privacy is a must, neither of those apps is recommended.  Even though Whatsapp claims phone calls are end to end encrypted, they're still routed through a centralized server and the encryption isn't controlled by the end user.