Yes. I have a 1 GiB/month cellular data plan. If I'm on the go, or my home internet is down (like it is now), that 140 MB is a seventh of my internet for the entire month.
If you live in Africa and have a connection like Ben Kuhn, 2.6 mbps[1], then downloading that 140 MB installer will take over 7 minutes, while a 5 MB installer will take 15 seconds, and Windirstat's 630 KB will take about 2 seconds.
If you have a 16k connection from Ethiopia[1], then 140 MB takes almost 20 hours to download (5 MB is 43 minutes, 630 KB is 5 and a half minutes). Good luck with that.
If you're on a 32 GB SSD (like I was just a few years ago), 140 MB for a highly specialized tool is a huge amount. Or if you're building a system recovery image.
Or, if you have a large, but slow, HDD in an older computer (or worse - a small and slow SSD in a netbook), then reading that 140 MB installer (or the potentially-even-larger installed program) is going to be far worse than a 5 MB one.
I can think of a dozen situations where 140 MB is a problem. Don't assume that everyone else is in the same situation as you. As a matter of fact, if you're a programmer, your hardware is probably significantly better than the average computer user.