Fonts are often a pain and I’ve had some issues with fonts being blurry when I don’t want them to be (see here: SpriteFont rendering - Can't seem to disable smoothing), but I think that’s a different case that you’re experiencing entirely. That’s way more smoothing on your font than I would expect.
So I’ll ask the usual questions…
- Are you scaling this text in any way or is this the default size?
- What’s your SamplerState set to in the SpriteBatch that draws the text?
- Is your font really small? Try a larger size just to see if the blur goes away.
- Try using another font with all the same settings as the font you’re using, do you see the same issue?
You might want to take a browse through that thread I posted though. I had some success switching over my font rendering to using MonoGame.Extended’s BitmapFont. It allowed me to get the crisp, pixelated look I was striving for in the prototype I was working on.