Got a lava pit? You can open a trapdoor and send stuff in. Kill it dead. Or just trap it in a plain old pit and throw a grenade in. Minecraft doesn't have a lot of specialized gadgets to activate with redstone, any machines you build are all your own design from a small selection of components, mostly various flavors of opening/closing doors.
Worst thing is, currently Starbound can do that, but exclusively with mods.
The base game lacks anything that can be used as a trapdoor with any reasonable efficiency, and also lacks any way to move fluid. Functionalities both added by mods iirc.
Terraria had at least basic world-affecting wire-work in from very early on, and I think I agree that the distinct lack of player-made/placed traps is another part of the deliberate attempts on the part of CF to (for some ungodly reason) make the game have MMO levels of grind. That's the heart of it: options are good. Limiting player creativity to make it conform to the dev's vision of the game might fly when you're doing an artsy linear story, but sure as hell not when it's suppose to be an open-world sandbox.
That's the worst thing; it's not even "MMO" levels of grind, it's EVERQUEST levels of grind. In most current MMOs, at least you have some level of involvement via a damage ability rotation, various utility/defensive abilities, and even the palleteswaps du jour can spring nasty surprises via hitherto-unseen ability types, like Big Attacks, CC, damage reflection, stealth/camouflage, using the entire skillset and loadout of PvP-optimized players for uncommon, high-risk high-reward encounters etc.
Starbound consists mostly of jumping around like a spaz to avoid blood vomit or bullets while retaliating with ranged weapons, or CCing something to death with the ministun of a mele attack. If push comes to shove you can just wall the thing into a cage made of dirt and plink away at it with your 3dmg gun.
The other problem with the grind is that it doesn't DO anything. I will admit that I don't know too much about Terraria's current balance state, but back when I last played, you got better armor to survive more hits, not to not get OHK'd (possible exception being just after the transition to hardmode). It was why you could legitimately skip tiers sometimes.
Getting appropriate-tier armor in Starbound merely allows you to survive.
Worst still, simple currency grinding in Terraria was legitimately lucrative; get enough money and buy a minishark, and nothing will pose a problem for quite some time. Starbound has you grind for money to not die, via its armor upgrades, and if you do manage to find a skyship, don't expect the gun to be worth a damn two or three tiers higher.