Aren't these two sentences contradictory? Why would someone who is so worried about liability that they do not open up their wifi run a Tor node? Alternativel

Aren't these two sentences contradictory? Why would someone who is so worried about liability that they do not open up their wifi run a Tor node? Alternatively: are you implying that a Tor node is "more deniable" than an open wifi? If so, why?