Shingeki no Kyojin is 100% a mecha anime. If you play Fur Elise on an electric guitar it doesn’t automatically become Rock’n’Roll, and making the giant robots out of meat does not change the fact trust SnK is full of mecha tropes, is structured like a mecha anime, and the characters treat the titans like vehicles.

Definitely yes. It has nothing to do with summoned creatures, even remotely.

> Otherwise, a fight between two pregnant women could be seen as a mech fight.

No. You are missing the fact that in AoT the pilots pilot the mechas, and not just be there doing whatever embryos do.

>Otherwise, a fight between two pregnant women could be seen as a mech fight.

I mean, when you consider what pregnancy does to an expectant mother, hormonally, and the lengths to which some will go to protect their unborn child... It's not an entirely implausible characterization.

But speaking to AOT, specifically, it's real robot with some super robot/fantasy/Abrahamic text characteristics to allow for the setting. Despite the "summoning" aspect, practical considerations of when and how to employ titans, the political, social, and philosophical ramifications of their existence and use, and the fact that the story is ultimately a study of characters caught up in war and history and intrigue, all point to a solid mecha, real robot classification.

Considering [SPOILERS] the derivation of the evas from Shinji's dead mother and the heavy use of womb imagery as the pilot sits in amniotic-like fluid, arguably this is a valid interpretation of Evangelion lore.