I couldn’t really tell but it looks like there might be a little scuffing in that top side panel. Is that where the seat belt might be chaffing it? I’d be sure to put some leather conditioner on it though if there is any question. Should be done a couple times a year anyway, especially the driver’s seat. The other thing is though, nothing against Mazda, but the quality of leathers can vary quite a bit from one model to the next so might not be the same as what you would find in another model.
I’ve had cars with leather for long periods and I always wished they would have made spare seat kits available. When they are available when new, you can get a whole set of skins for under $1000 to use to reupholster some day. I’ve had new inserts sewn in and really it would be cheaper and easier just to replace the whole skin if they would be available. Same labor whether you sew a panel in or the whole thing. Just to go off the track a little.