i know we usually complain about youtubers who advertise stuff they don't actually use, but holly is right at other side of the spectrum
her eye surgery was a paid ad, which i find very irresponsible taking into consideration how delicate and crucial these sorts of surgeries are. i mean would you trust a doctor that contacts you to offer a free treatment in exchange of some views and traffic into his website?
now, her new mattress is also a sponsored collab. she mentions that mattresses are very important bc your sleep health depends very much on them, which is true! also, they usually last a decade or so, so you must be careful choosing the right mattress for you and you back and not take the first free one that someone offers you
i understand that if you're given free samples of shampoo or new vegan products you would like to try them, but i think she should not accept these sort of collaborations in which her sight or body wellness are involved. with all the money she earns she could do some research, speak to different clinics and shops, and pay for the best surgeon and the best mattress she could find