I don't know the details since I'm mainly a windows dev, but when porting to linux, TBB has always been a huge pain in the ass since it's a suddenly additionally required dependency by gcc. Using C++ and std::thread.

Also clang, and in general parallel algorithms aren't available outside of platforms not supported by TBB.

C++26 will get another similar dependency, because BLAS algorithms are going to be added, but apparently the expectation is to build on top of C/Fortran BLAS battle tested implementations.