Newts that are financially accessible for most tick all the boxes of what doesn’t work for high resolution planetary imaging… inability of spider or primary cell to hold the mirrors still, cheap and flimsy tube that bends at the thought of a slew…
SCTs are common for that use case because their sins are fairly manageable, and they don’t require superhuman strength or observatory class mounts to use them.
Fwiw I’d love a dedicated planetary scope… but it’d have to come with a kind of seeing guarantee