I concur there's obvious bloat and unnecessary cruft but also:

- Most text is now utf-8/Unicode, which requires at last 2x memory for the same text length in comparison with ASCII/ISO-8859.

- As others have said, code is 64-bit now, which multiplies the space and memory which used to be required by 32- or 16-bit apps.

- The relentless, unyelding and unforgiving pressure to produce results quickly under insane constraints discourages or forbids any kind of optimization. Now you just put your interpreted code with an Electron platform and call it an app.