Yeah, JetBrains IDEs are Java-based, so rather heavyweight. Then again, VS Code (and Cursor) have a browser engine running in the background, so not really better in my book. Sublime and Zed are more efficient of course. OTOH, JetBrains IDEs might be memory intensive, but don't actually feel sluggish on my 5 year old Core i7 laptop with 16 GB RAM.
Visual studio (at least its "core") is written in C++, yet is very heavy weight, so it's not the programming language at play here.