This seems like maybe you're projecting your own personal feelings onto others. The last place I worked was a consultancy that was super flexible with working arrangements. Some folks were half time, some worked 30 hour weeks, and others worked traditional 40 hour weeks. Nobody expressed any problems with it. Everybody got rewarded for the effort they contributed. The people (like me when I started) who wanted to focus on work could do that and the people (like me when I left) that were focused on other things but still wanted to work could do that. Where's the problem other than inside your own head?