What they want isn't possible on most raids, without totally restructuring the raids mechanics, and they're not spending dev resources on that without it being behind a paywall
Exactly. I don't know why people are still advocating for low man, casual friendly Raids. It worked for the Dungeons because all you really had to do was remove the Darkness Zone and it was good to go. For Raids, while there are some encounters that would work on, not all of them will work. And as you've pointed out, restructuring Raid mechanics for low man clears isn't a high priority for the devs. Especially when none of the old Raids are giving meaningful rewards in Destiny's current Sandbox.