I'm not a heavy user of either of these services (I don't have an Instagram account, I have a FB account but never use it, and even though I use WhatsApp regularly I use Telegram a lot more), so my views on this news may not reflect those of the mass majority, but I think this will be a big mess.
Facebook had a terrible 2018 with regards to privacy and user data, so news that three of its biggest platforms will be merging will undoubtedly raise a lot of eyebrows. The apps will continue to work independently, but this merging will allow users of one platform to message users of another platform. While this may seem like a good idea, just remember that only people with your personal phone number can currently message you on WhatsApp, so this move might potentially throw that limitation out the window, opening the door to an incredible amount of unsolicited messages from Facebook (Messenger) or Instagram users. We don't yet know if Facebook plans to allow users to opt-out of such a service, or if the company will provide any granular controls to allow users to restrict who can send messages to them, but one might think that any form of control given to users will surely be limited by Facebook. The privacy settings within the social network itself are a convoluted maze, imagine trying to navigate privacy settings between these three apps under Facebook?
What do you think? Are you a heavy user of these platforms? Do you think this is a good move?