Whatsapp ban some phone

WhatsAppWhatsapp recently announced that from the 1st of January, 2021. It messaging app will no longer be available to thousands of users operating a lower version of Android or iPhone device.
From news source  , the only remedy would be to either buy a new phone or update to current version.
Few top Brands to be affected are HTC, LG, Optimus Black etc.
MUSIC: Small Doctor – Soro Soke
To be sure of safety, you can check the software version your device is operating by checking your setting.

More: For Android users you must at least operate Android OS 4.03.

Iphones: at least update to iOS 9
What this recent update, what’s your take on this?