If internal link building is something you do, then how challenging is it?

Not very challenging. Maybe just a little at the beginning when you don't have enough consents.

Internal link building can indeed be a challenging task, requiring a strategic approach to ensure relevance and value. However, when executed correctly, it significantly enhances site navigation and boosts SEO performance.

Internal link building can indeed be a challenging task, especially when trying to maintain a balance between user experience and SEO optimization. However, with a strategic approach and the right tools, it becomes a manageable and highly beneficial process.

It is very little challenging. You just read the whole site and link where it is reasonable to link.