This is actually useful for me. But don't think it understands the concept when you press ALT+G. I wanted to leave a comment expanding "tried it loved it" but it thinks I'm talking about food for some reason :/
https://i.imgur.com/NAKhwMo.png
Also I think you should really checkout github co-pilot's autocomplete. When writing readme files I see it often completes the whole sentence in gray text which is much faster to expand and easier to complete. Your popup is a bit distracting compared to the inline gray text of copilot/gmail.