Tree shaking was mostly a thing invented in the NodeJS ecosystem for websites to save transfer traffic and thus lead to faster page loads, as well as save a bit

Tree shaking was mostly a thing invented in the NodeJS ecosystem for websites to save transfer traffic and thus lead to faster page loads, as well as save a bit of RAM. Even budget phones routinely have more than 4GB of RAM, and high-speed Internet access is the norm, so you can get away with a lot more inefficiency than just a few years ago.