The problem with Disney+ is that when Netflix (especially) or Hulu flood with content, Disney+ content drips.
It's not entirely their fault, as they haven't been able to film as much new content as was planned, but you would think they would at least move faster on getting some of the older stuff out that is just sitting in the vaults. Will most people care? No, but it's something. As opposed to their current "well we'll release four TV episodes a week total and that's just fine" model.
The Muppet Show is probably the last big thing that's still in the vault, and only for another month or so. Then what?
I get that there's always going to be an audience of parents who need to entertain their kids, and those kids might be fine watching the same content over and over again, but if they really want to grow their audience (and keep it, once those sweetheart signup deals run out), they need more. If they can't create new, then they need to dig into the vaults.
Then again, it's very much the WDW strategy of parsing out the bare minimum to lavish praise and it seems to work just fine for them in both cases, so...