On a personal note, my granddaughter had been dying to watch TWD. She was allowed to last year when she turned 14. She caught up on all the episodes since and loves the series.
What was kind of uncomfortable (for her parents especially) was the very FIRST episode she ever saw was the most brutal with Negan killing Glenn and Abraham.

She loves the show and loves Carl (teenage crush). Anyway, it's her 15th birthday in July and I bought her a Carl t-shirt. I know she'll love it.
TIS