I think the bad reviews were written by toxic men Any female driven movie or show is rated way lower than it should be because there are so many men who think it's their sole purpose in life to keep women in their place. Which is quite ironic considering that this show isn't about hating men, it's about not allowing that kind of toxic patriarchy to destroy our lives as women.
If the patriarchy has ever affected you, if you are a teenage girl, if you are the parent of a teenage girl or if you just like shows that delve into the incredibly complex minds of teenage girls - watch this. It's not perfect, there are a few wobbly bits but it's 2020 and life is like that. I really enjoyed it, I recommended it to others, I'm coming back for season 2 - even with the plot holes in the finale.
Women - watch it, men who aren't afraid of women - watch it. Men who are just here to make sure that female shows don't get good ratings - we've had enough of you, you're cancelled.