Not really - pitchers aren't developed/trained anymore to be able to get outs with 80% effort in order to log 250+ innings a season while pitching 120+ pitches a start. Nowadays I'd say over 90% of MLB pitchers go max effort, all the time - and they are expendable.
And It's not that the Brewers' staff is any more shot than their competitors, either - guys like Hall, Henderson going down really do hurt depth to avoid blowup innings. The issue is there has been zero days off for this staff for way beyond what the schedule typically provides, which gives these guys an extra day collectively to refresh. MLB has a scheduling problem with how frequent the early season off days are (to help avoid too many weather issues in April/May) compared to summer/down the stretch, and what having to schedule double headers or eliminate some of those late season off days does to teams in August / September.