This post makes the assumption that capability necessarily sacrifices performance. That's not necessarily true. The most powerful ability of Visual Studio Code, and the reason that it's so massively popular, is its large and high-quality selection of plugins, along with the backing of Microsoft and the clean integration with GitHub.
There's no reason to believe that Zed wouldn't be able to have a marketplace for extensions in the same way as Visual Studio Code, and it wouldn't have the high RAM usage and latency associated with Visual Studio Code.
Additionally, Zed will have additional capabilities that are not present in other editors. Most notable is the Google Docs-esque collaboration feature, which will probably be the largest part of its marketing. However, because these capabilities are not available in the open beta, people are only talking about what has been revealed so far, which is mostly in the low-latency performance of the editor.
There's no reason to believe that Zed wouldn't be able to have a marketplace for extensions in the same way as Visual Studio Code, and it wouldn't have the high RAM usage and latency associated with Visual Studio Code.
Additionally, Zed will have additional capabilities that are not present in other editors. Most notable is the Google Docs-esque collaboration feature, which will probably be the largest part of its marketing. However, because these capabilities are not available in the open beta, people are only talking about what has been revealed so far, which is mostly in the low-latency performance of the editor.