Yes you can dislike both sides.
But looking through an objective lens, "royals" or not, I don't have to like William and Kate to declare that it takes real bottom-feeding self-serving scum (Harry and his handler) to stoop low enough to publicly blackmail your own family out of greed and selfishness, use trigger issues like mental illness and racism for self-aggrandising (whilst keeping schtum about being a vile racist yourself hiding behind your black-when-convenient wife), fake philanthropy, and even routinely try to generate good press for yourself on your nephews' and niece's birthdays, and by planting vile stories about your family with "sources", and when all else fails use your own children as shields against bad press. Pure gutter scum.
I can think of a few reasons to like W&K, even if I don't share them, but can think of a total of zero reasons to like H&M.
It's about making sure you put enough pegs on your clothes when you hang them on the washing line to dry if it's really windy out so you don't find your newly clean washing on the garden floor.
I go one step further in my pegging routine and only use matching colours of pegs for each garment, digging in good and hard as I go along.