[ygra]

(Philippe always posts walls of text, even on the SVG mailing list; seems to be their thing.)

Hinting as done in TrueType is probably overkill for most purposes. But icons are often not displayed in arbitrary sizes, but rather in one of a few known-in-advance sizes. It's not hard to tweak the paths and shapes to fit to the pixel grid for all those. Also, as you approach higher pixel densities, it becomes much less important; basically you may just have to make sure that the smallest sizes fit on whole pixels and that's it.

Long ago I've automated asset generation in different sizes from SVG for an Android app I worked on and even without caring (much¹) about a pixel grid the results were good enough not to need tweaking.

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¹ When hand-writing SVGs I tend to care about integer coordinates simply to not lose my mind.