The "don't explain variable definitions with comments because people won't see the comments at usage sites" argument also seems obsolete in the face of modern(?

The "don't explain variable definitions with comments because people won't see the comments at usage sites" argument also seems obsolete in the face of modern(?) IDEs. If I look through code and see a variable I don't know, I want to see its definition anyway, so I know the type, scope, initial value, etc. And it's trivially possible to do that with everything that has a "jump to definition" command.