I do think she deleted her blogs because of her job. Hannah works in licensing or something like that. I remember she initially just deleted vlogs like her Primark vlogs where she critiqued the branded products she was showing. The travel vlogs went later. It wouldn't surprise me if she didn't have to delete all of her travel vlogs, but chose to because she didn't want to edit out critiques and felt some social pressure to not be a fangirl. There are departments at Disney where coming across as a fan just isn't cool.
Charlotte works on the social marketing side where vlogs complement her skill set. They have very different roles.
I do miss Hannah's Walt Disney World vlogs. There aren't enough solo travel vloggers out there!