WhatsApp is useful but has multiple competitors which offer similar or even better functionality - it will be replaced overnight by Telegram, Signal, Viber etc.

WhatsApp is useful but has multiple competitors which offer similar or even better functionality - it will be replaced overnight by Telegram, Signal, Viber etc. On the other hand neither TikTok or Instagram are actually a product which a society will miss its functionality, a lot would argue that we would actually be better off if they didn't exist at all.