Am I missing something here? This just looks like Zoom or Teams or any of the other video calling apps that have been running the world for the past year. What's so special about it?
Even mobile Telegram is so small and efficient despite being feature-packed. Just compare 67Mb of the Telegram installed Android app with 156Mb of Discord, 623Mb of WeChat, etc.
This does a bunch of great things. Its focus isn’t video chat. Teams and Zoom are awful for most situations or actions. Zoom excels at [group] video chat/meetings/webinars only.
Teams takes 500MB of ram and pegs a quad-core cpu to 70% to updates some smileys