>>11250716No, vehicles don't negate the "shelf space argument", because vehicles or no, they still take up less space when compared to 1:12, by virtue of literally being a smaller scale. Additionally, vehicles can act like a playset on their own as well.
As for articulation, there are 1:18 stuff with just as much as 1:12, and in average it's basically just butterfly joints, and maybe a second elbow joint, so like, +15° tops?
There's still plenty in 1:18, so that along with vehicles/playsets, 1:18 objectively has more to offer than 1:12.
My 1:12 boba Fett has basically nothing on my 1:18 boba, who also has his slave-1. It's not hard to see that one is a figure, while the other is a figure and it's ship.