Stop asking for cover letters. The job market is ridiculous and most people need to apply for tens if not hundreds of jobs. We're required to submit our resume, and we're also required to manually enter all the information from our resume into terrible CRM interfaces. On top of that, you want a custom open-ended writing assignment? Get real. If you want a sample of my writing to see how I communicate, ask for that, I can recycle it.
I get it. We're not the only fish in the sea. But neither are you.