I respectfully disagree. I’ve passed the same thoughts back and forth in my mind before, but it’s mostly nostalgia.
Yes, some tools were much snappier on much crappier hardware, but they also lacked features, including safety and collaborative ones.
We have so many more people using computer devices and the internet now. We have to account for them to some extent and a lot of libraries do that for us, but it does make them heavier.
I’d say yes software has gotten fat and slow in a lot places, but also immensely more capable and more reusable.