I really enjoyed it, but it definitely had its flaws.
First off, like others said, this is not a horror show and people should not look at it like that, it is gothic horror/romance. I think people have to stop thinking that this series is going to be something like The Conjuring.
I LOVE a slow burn, but this show could have easily been 5-6 episodes and been better for it, there are multiple parts where you are just saying "Okay, we get it" and it's enough to easily predict what's going to happen next 1 episode in advance. They beat you over the head with themes and foreshadowing way too many times.
Accents aside, performances have been great but writing could have been better, especially the romance scenes.
The ending was MUCH better than Hill House, but just like Hill House, they explain way too much towards the end, and it's explanations that we don't need.
Not everything has to always be explained 100%, that's how you lose the mysteriousness, and things are no longer as creepy when you understand everything 100%.
Same, I was doing dishes later and suddenly it clicked.
Your second point though
Semi-unrelated but I love how people make fun of the "HIDDEN GHOSTS" clickbait and here it is perfectly encapsulated on that thumbnail.
I'm surprised they don't have white outlines.