Sorry to be the pedant, but with the Oxford comma you can use a comma before “and” to signify it’s the last of something in a list. Not sure which part of their work you were referring to though!
I do find it bonkers that with two of them writing they still can’t proof read their work. None of what they’re doing is original content (apart from those woeful joys of lockdown
). Think this is the danger that so many “influencers” and “bloggers” are facing now- they’ve left the world of publishing / salaried work where they would have bosses and editors, and regular appraisals of their work- to freelance and the only feedback they get is from adoring fans. No one can critique them or pull up mistakes without being called a troll or they do as Hannah and flounce! Without the endless promotional events and paid trips to go on by big brands, most of them are finding they have no real voice and nothing of note to say...