this may be the effect of what people are used to. Going from 30 to 15 is huge, even if it's awful compared to a couple seconds / hot reloading. I've worked on projects where the development loop required deploying to a test environment. You get used to programming without the feedback loop (not to say that this feedback loop shouldn't be sought after, only that one adapts to their circumstances)
I also hypothesized that working in an actual statically and strongly typed language leads to less "save, reload, pray" loops than a typical front-end developer may have gotten used to