I'm not aware of any production use cases where tcmalloc would be worse than glibc malloc in a way that end users would actually feel. tcmalloc and jemalloc are used all over the place in all sorts of different applications.
If glibc malloc is so bad at something like this I find it hard to believe it would be great at anything important if jemalloc/tcmalloc are not.
If glibc malloc is so bad at something like this I find it hard to believe it would be great at anything important if jemalloc/tcmalloc are not.