The problem here isn't about whether or not to add uninitialized memory to the entropy
pool. Removing that line was fine. The problem was removing the other line, which is
where all entropy (except the PID) was added.
The Debian maintainer didn't look at the wider context to see that one of those lines was
absolutely necessary, and that the routine it was in just may have been wrongly called
with potentially-uninitialized memory once or twice.
This reminds me of Linus's argument about debuggers making programmers stupid,
making them focus on narrow scope rather than understanding the way the code is
supposed to work in context. In this case it was valgrind that made the programmer