hike is dead, everyone uses whatsapp, the kids use snapchat, and people use telegram for large groups / interests.
Also, what a very localised generalisation. The article is about how the dominant app in China is faring in India. Other countries have different usages.
Eg near both india and china Line and fb messenger are dominating Thailand while Whatsapp has trouble there (lots of people have it, nobody uses it), snapchat is still hisptery/rare, wechat is limited to chinese expats and nobody has even heard of telegram.