1. Performance issues: Some users have reported performance issues with VS Code, particularly when working with large projects. The Electron framework on which it is built can cause sluggishness, high memory usage, and slow startup times.

2. Privacy concerns: Some people are concerned about Microsoft's data collection practices. They may feel uneasy about using VS Code due to potential privacy risks, despite the availability of telemetry settings to control data sharing.

3. Extension quality and fragmentation: While the extension ecosystem is one of VS Code's strengths, it can also be a weakness. Some users have noted that the quality and compatibility of extensions can be hit or miss, leading to a fragmented experience.

4. Open-source alternatives: Some developers prefer to use open-source software and may dislike VS Code because it is developed by Microsoft, a company with a mixed history regarding open source. They may opt for alternatives like Atom, Sublime Text, or Vim.

5. Lack of advanced features: While VS Code is feature-rich, it may not have all the advanced capabilities that more specialized IDEs offer, such as deep language integration or robust refactoring tools. Some developers may prefer to use more powerful, language-specific IDEs.

6. Overwhelming configuration: The sheer number of configuration options in VS Code can be daunting for some users, who may feel overwhelmed when trying to customize their setup.

7. Frequent updates: VS Code has a rapid release cycle, which can be both a strength and a weakness. Some users may be frustrated by the constant updates and the potential for breaking changes or new bugs.