As someone who avidly uses WhatsApp and yenner social media, there’s a huge difference between the two, but if you’re not careful, that distance can lessen.
If you’re on Facebook, reddit, YouTube, Twitter, GitHub, Orkut, Myspace, or whatever, you have little to no control over what content you’re seeing and who you’re seeing it from. Everything goes by “the algorithm” which claims to know your every thought and feeling and tailors an endless feed of content accordingly which can contain all sorts of random people and things. WhatsApp on the other hand is user controlled. You can only see content from the groups you’re a part of. There are no adds, and if someone posts something from a different group, there’s no link back to the source. So if one is not careful, they can absolutely get sucked into the same social media gehinnom by joining random groups and accepting every message. But the default is still a big wall around your personal stuff.