Comment by chris_money202

That's a generalized statement. Smart pointers can stabilize things, if used wrongly they can cause just as many issues. Sprinkling in smart pointers such that there is now mixed use with smart and raw pointers can cause double frees, and huge maintenance issues. So, creating a single PR to introduce smart pointers in my opinion is not necessarily "stability". He should have created an architecture plan and got upstream and downstream aligned.