If someone’s going to hire you remote shouldn’t you demonstrate your ability to communicate well in text and elaborate on what makes you a good choice in a well written, directed cover letter?
yeah the cookie-cutter cover letters are useless, but i've hired people who write: "i love you are working in machine vision, i've worked with x,y and z tech to build _. I could augment your efforts in these fields...".
Call it what you will a cover message or note perhaps.
I hire and pay top of market and I definitely look at cover letters, at least scan them (some are huge tells that they don’t even know what we do, so it weeds out the candidate), and often they’re the thing that differentiates the various candidates who have similar backgrounds. I’ve also hired lots of people without cover letters. I don’t think spending a few minutes writing a paragraph like another poster stated above is a waste of time.