Is the use of finger-jointed wood in wooden stairs concerning?

I'm just in a stupid situation where patterns like the ones in the attachment were offered to me by default with the house. When I was in contact with Polish suppliers, some said "that won't hold" or "we would be ashamed to offer something like that, for us it’s waste." Unfortunately, the construction company offers very little money if you do without the stairs, and I’m struggling with myself whether I should be satisfied with what the company offers or not.

So the stability has already been addressed by the fellow forum members. The appearance strongly depends on the type of wood and the choice of color. We chose a painted finish for our steps (which is probably what your sample pictures show). You can't really see the appearance that way. Here you can see and marvel: https://www.hausbau-forum.de/threads/lage-stadtvilla-oder-einfamilienhaus-auf-500-m2-grundstueck-rechteck.33505/post-559668

By the way, it also comes from Poland.

The finger jointing is only visible on the oiled stringers, then as a fine zigzag seam and, as mentioned, only if you look very closely.

I do not see any finger joints on the samples. The wood selection is just a bit more rustic, but we deliberately chose it that way so that it better matches the rustic parquet.

I don't see any finger jointing on the samples.

You can't see it from above either. It only works if you look from the front.