Hail
Satan's minion
in games where the player's mistakes are clearly communicated back to them, players tend to learn from mistakes and increase their skill. not everyone! I know.Length of time playing a game doesn't equate to skill at said game.

a great example of negative feedback are mistakes in a tactical battle in a game. a game like... Starships.

agree with you if we consider FPS or RTS like Starcraft.Ability to successfully design a game doesn't correlate, nor need to correlate, with ability to play said game. You can design a good game but lack the mechanical skill to compete at it.
When considering TBS, I expect the game dev to have some level of proficiency with the game. He designed the game and he knows how the systems interact.