What is the importance of UX design for a new product/startup?

UX design is a key component for any new product or startup, as it helps to create a positive user experience with the product, and users are more likely to adopt well-designed products. These designs should be tailored to meet the users' needs and provide an intuitive and enjoyable experience.

I can say it's very super important but there is a special case if your product is absolutely must be used. For example in my country (Indonesia) to handle the country insurance we need to register into the products/apps that created by gov and yes the UX is sucked but we must use this.