There's nothing redundant about maxing Q in a solo lane. It has half the cd of W, deals similar amount of damage as W (which means more damage to a single target which is what you have in a solo lane), and has farming utility (refunds mana and halves cd on last hit) over W. Maxing W first means you lose out on all of these advantages
The reason W is the start for support Annie is for the level 1 cheese. She needs to get ahead or else she gets outscaled because her only utility is her AoE stun. You max W because you don't have the farm and ap that a solo lane annie will get so maxing W gives you more damage since it has better base damage than Q, and it gives you a chance to deal that damage to the adc + support because its AoE.