I like her and I am not sure I can tell you why? Why does one like one person and not another? Why do the people who are your friends, become your friends and not other people you come into contact with? So the short answer is I don't know, but I will take a shot at explaining.
She is vulgar and her rants should be annoying. I am not wild about the vulgarity TBH
But when it comes to the rants they are tolerable, even amusing because of the delivery. There is a twinkle about her. She doesn't quite break the 4th wall but there is often a hint of knowingness, as if the viewer is her confident and in on the act.
I haven't seen her act maliciously or be nasty to any other HM. She can speak very well when she chooses and it is easy to follow the points she is making. She has a quirky turn of phrase which has made me laugh more than once.
I like that she tried to fit in with "making tea and coffeee and pretends to be fascinated by English things" And I get the impression it is all done ever so slightly tongue in cheek.