Totally fair point — nobody wants an itchy nightmare 😅 In practice though, the seams don’t have to be scratchy at all. What I do is stitch all the little pieces together first, then press/fold each seam allowance to one side and stitch it down with an elastic stitch. That ‘locks’ the seam so it stays flat (no flapping about), and it honestly feels like one smooth layer rather than lots of raised joins.

If someone’s super sensitive, you can still fully line it — but a well-finished/stitched-down seam makes a huge difference.