“It’s better to not wash your face in the morning” is a claim that the original poster backed up with an article relating to a French pharmacist, who claimed cleaning your skin in the morning removes a layer of sebum your skin produces to protect itself.
According to the American Academy of Dermatology, you should wash your face in the morning, no matter your skin type. Some points the AAD has for a morning wash is that it removes overnight buildup and prepares skin for products.
https://www.aad.org/public/everyday-care/skin-care-basics/care/face-washing-101
Sebum protects us from loss of moisture, infections, and friction damage. But, for the benefits, it’s important to note that your pores can get clogged with sebum, resulting in acne. (According to Cleveland Clinic). Sebaceous Glands: Function, Location & Secretion
People with sensitive skin or dryness issues like eczema though, washing your face twice a day may be drying. Carolyn Stull, board-certified dermatologist, told Health that with inflammatory skin conditions, “Stripping the skin of the natural lipids produced overnight can compromise skin barrier function, making the skin more susceptible to irritation.” (Health,
https://www.health.com/should-you-wash-face-morning-8597820#:~:text=When%20it%20comes%20to%20how,and%20hair%20will%20build%20up.”)
Everyone's skin is different and unique. I believe it is different for everyone, as there are benefits and/or drawbacks to washing your skin twice a day or not.