Is there a way to make the terminal's font less blurry?
You can lighten the antialiasing system-wide in System Preferences. Go to General and at the bottom is a checkbox labeled "Use LCD font smoothing when available". This is pretty cool in theory, but Apple's implementation is... not so great. LCD font smoothing  (also called subpixel rendering) treats the R, G, and B channels of each pixel as separate pixels, so you get something that looks even smoother. However, on a Mac it just doesn't work very well and you end up with the super-thick font.

Here's an animation of the two different antialiasing styles.



So all you need to do is uncheck the LCD font smoothing box and restart Terminal. (If you log out and back in or reboot, it should make the font better for the full UI.)

To off subpixel rendering for a specific application, use

defaults write com.apple.Terminal AppleFontSmoothing -int 0


changing com.apple.Terminal to the bundle ID. Change the 0 to a 1 to turn it on again.

To turn off subpixel rendering only for MacVim use:

defaults write org.vim.MacVim AppleFontSmoothing -int 0