Most of the users were complaining about this for so long.
Google has launched amarketing campaign attacking Appleover this issue.
The search giant Google has published awebsite Get The Message.

It asks people to call out Apple on social media for broken group chats.
Apple does not have modern texting standards for communication with iPhones and Android devices.
Google has also published a blog post that has an interview with Elmar Weber, from Google.

He breaks down about the fight between RCS and iMessage.
He also said about problems between iPhones and Android phones which points out Apples fault.
Google is a big proponent of RCS ( Rich Content Services) for messaging apps.

The tech giant rolled out RCS when US-based wireless carriers asked for support.
If you want to know more information about RCS, and iMessage then head toandroid.com/get-the-message.
This website directly addresses the issue.

Most iPhone users use iMessage, mostly in the US.
So, the Android users in the group chats couldnt use iMessage features.
Instead, they use other platforms like WhatsApp or Telegram.
In short, US iPhone users reject Android users and it destroys relationships and friendships.