Annihilated

I saw the reasonably well reviewed made for Netflix science fiction movie Annihilation on the weekend.

I'm puzzled that it got any good reviews.  None of the characters felt real;  the reason for and aim of the all female expedition was poorly explained; the science was vague and bogus;  and the alien thing causing all the problem was destroyed pathetically easily.  

Science fiction dealing with fast evolution and genetic changes is rarely good - I'm thinking of the not very funny Evolution, the rapidly growing alien thing on the space station in Life, and now this.  At least those movies got bad reviews.  This one should have too.