I don't know how you came to that conclusion but I'd guess that you mostly work on small projects? (where I'd say smallish is < 100K LOC)
Stuff I'd miss in VS Code coming from JetBrains Rider:
- Docking of panels to top, bottom, left, right
- built-in database explorer (with table designer, script runner, ...)
- built-in unit test explorer
- built-in memory/perf profiler (not talking about a simple text interface!)
- nice config options of project settings (in either text with completion or the UI)
- NuGet package explorer UI
- integrated IL viewer
- great git blame / annotation view
... could continue for a while