I think it’s because they use their position to professionalise a bullshit job, presenting it as a field (HR Management), when their skills are rather ordinary. Really, they should be doing payroll and employment admin, not setting the tone for the organisation or being seen as specialists in any meaningful way. Also, job competencies and profiles disproportionality reward the “skills” found in HR, which i think reflects their input in designing these tools and templates.
Further, i find people who work in this field to have quite a high opinion of themselves and their usefulness.
We lionise fire fighters because they’re not cops, but inevitably some are still arseholes