Ungrouted seam on bathroom backsplash, grouted seam where shower tile meets wall

My contractor did the tiling in our renovation. I have some concerns about the quality in my bathroom particularly that he didn’t seal/grout the bottom of the backsplash. We talked and he said there is a bead under the tile that interlocks so there is no need to seal it. I think it looks rough and am concerned about water entry.

There is also the bottom of the shower corner where the tile looks to be pulling the wall. The tile is natural stone so I know it pulls some away from the wall but this was done less than 3 months ago. Advice welcomed.