Titles are important for pay reasons, as they correspond to pay bands. People that say titles don't matter are probably already making outsized compensation and don't find it important because their resume speaks for itself.
A manager and director can be doing the same job, but the title matters in terms of their compensation and potential title at their next job.
A manager and director can be doing the same job, but the title matters in terms of their compensation and potential title at their next job.