It looks like a well crafted UI, with care and attention to detail. The kind of thing that takes coordination. Scrum can help with that.
The grandparent poster seemed to be claiming the opposite: that scrum makes such things harder to achieve. That doesn’t match my experience. I think you can make a polished product, or a mess, using any of a variety of coordination technuqies. If anything, the planning technique is orthogonal to the cohesion of the product (although IMO if you do Scrum well, you’ll probably find it easier to coordinate towards a high cohesion product). But Scrum (or any well run system) is not the only factor. At a minimum you need a team who want a high cohesion product; you need some people who can help steer production towards a high-cohesion product; you need to have people on the team willing to have their opinions challenged from time to time; and, if you’ll indulge a little axe-grinding, you need the younger team members to trust the more experienced ones.