I don't have WhatsApp but I opened your link and navigated a little.
I found out a list with links and a header "Free Bitcoin". Free Bitcoin doesn't exist. What do you mean exactly that those groups do?
of course "click bait" mate,what can we expect from a newbie that offering such thing?
lucky that i am not using whatsapp lol.
and another thing mate try to prevent from clicking links posted by newbies because the chance of being phishing site is there.