Thing is, our computers are magnitudes of orders faster than 20-30 years ago. Why isn't our software orders of magnitudes faster? I'll settle for just 10 times faster.
If you take software from 20 years ago, and run it on modern hardware, it will be instant in most operations.
Clock speeds certainly aren't orders of magnitude faster than they were 20 years ago. The vast majority of the performance improvements of the past two decades have gone into improved capability, stability, and security. I don't consider streaming 4K video to be "bloat" personally.
If you take software from 20 years ago, and run it on modern hardware, it will be instant in most operations.