Tuner input power

Hi all – posting this question again here: I see that the recommended tuner input power is -50dbm maximum. is this for real? I live 30 miles from most transmitter antennas and signal strengths reported by tv fool are as high as -32 dBm. according to tablo support blog this will overload the tuners and cause recording problems. Are the tuners not protected with AGC and will they really start to mis-behave at -50dBm and stronger?