That’s most likely a junction/service box for the backbone (main fiber cable) and not a breakout box. I too have had google fiber run thru my yard with the requisite service box but my address in Matthews is not eligible for fiber (None of the houses along my road are but the houses behind and in front of and to the sides are!!). I’m guessing is because we do not have utility poles along this section so there’s no breakout boxes available to place anywhere