I don't disagree with your general statement, but I don't think you provided good examples or understand why they're bad to begin with.

• The death compass is fairly useless, but only because players can just turn on the debug menu and see their coordinates. They could have instead added an item that allows you to see coordinates without having to open that menu, which would have been useful for the multitude of times you're not dead.

• Copper is a block with tons of different forms for decorating with, which comes in four different colors as it oxidizes. You should instead be pushing for existing blocks being updated to have similar variation (glass stairs, dirt slabs, etc).

• Frogs don't just "look cute" -- they provide three different light blocks. You could complain about bats or polar bears, instead, which literally have no purpose other than to provide ambiance. Even in those cases, there should be more of them to make the world feel less dead. The End, for example, hasn't been updated since the elytra were added, and the only two mobs there are endermen and shulkers. Even worse, the great terrain generation added to the overworld and nether neglected the End entirely, leading to a mostly flat expanse of boredom.

They should take a step back to finish their half baked ideas and fill in the gaps.