Does R always copy data in RStudio?

Question

In Advanced R, Hadley Wickham writes

When refs(x) is 1, modification will occur in place. When refs(x) is 2, R will make a copy (this ensures that other pointers to the object remain unaffected).

But also

Note that if you’re using RStudio, refs() will always return 2: the environment browser makes a reference to every object you create on the command line.

Does that mean that in RStudio, R will always copy data, and never modify it in place, because refs() will always return 2?