Ah ha! I've long thought that of the Garamonds as well, it just never seemed as extreme as with Courier.
The point you bring up with different proportional amounts of bleed at different sizes is also quite relevant.
OpenType fonts have so many options now... I almost wonder if it would make the most sense to have a bleed option built into the rasterizer that could have defaults set by the typeface designer, but also adjusted by the user (e.g. more bleed when using white-on-black). There are so many arcane options on macOS's OS-level typeface options palette, it seems pretty reasonable.
The point you bring up with different proportional amounts of bleed at different sizes is also quite relevant.
OpenType fonts have so many options now... I almost wonder if it would make the most sense to have a bleed option built into the rasterizer that could have defaults set by the typeface designer, but also adjusted by the user (e.g. more bleed when using white-on-black). There are so many arcane options on macOS's OS-level typeface options palette, it seems pretty reasonable.