But it's not really. It's primarily focused around text, and chime is around videos and meetings. That's the use case. Chime is built around meetings. Slack is built around chat.
This is not true. We use Chime for text every day. It doesn't have all the 3rd party integrations that Slack does, but it give you the same basic functionality.
Chime is definitely better than Lync, but I stand by my statement that it's not very good at text. It's missing basic UI features like threading or merged comments, profile pictures/icons, not to mention more advanced integrations.
I love using it for meetings... but text functionality is still lagging behind Slack, or even Mattermost (also used within Amzn)
It's definitely true. My team also uses Chime for text every day. The client has virtually no options, even basic formatting stuff that has been available on dozens of IRC clients for decades.
Chime's main use is video. Slack's main use is text/chat. While both have components of the other, they are optimized for different primary use cases. Pretending otherwise is silly.