I think it's because the Grinch is such a relatable character. Everyone feels a little grinchy sometimes, especially around the holidays. And those stock photos capture that grumpy look here https://depositphotos.com/photos/grinch.html , yet somehow endearing, aspect of the character really well. You can use them for memes, social media posts, or even in professional presentations. The Grinch is a cultural icon, so using those stock photos adds a familiar touch to any content.
