Do you find thumbnails are More or Less important with shorts?

Our channel has only made one short and unfortunately it was created using the same unpopular style of thumbnail and I think it is the reason it still has less than 200 views after a week. I'm thinking this is a bad result since we have 2500+ subs and I've seen people with far fewer subs claiming they get 1500 views on their shorts in a short period.

Linked in profile for anyone needing more insight.