In large projects, that are multiple dependency chains, that cannot be fully parallelized. There's a critical, often a bit long path, for which single threaded

In large projects, that are multiple dependency chains, that cannot be fully parallelized. There's a critical, often a bit long path, for which single threaded is still very important. Another thing is that various platforms like nodejs, etc. may not be able to utilize parallelism much, adding to the ST importance.