"When Zeus lead the gods to our defence, Ares killed them one by one, until only Zeus himself remained"

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Ares stomps almost the whole Pantheon at the same time (as shown by the pics), and then picks them off one by one. Ares was also empowering himself by making humans fight constantly.
"I was a younger man once, and had i been in better health, i'd like to think i'd do the same".
Ares heavily implies here that he's getting healthier due to the war, but take that with a grain of salt since he was pretending to be human.

"I was left too weak to stop them. All these years i have struggled alone with spreading ideas, ideas, inspiration for bombs, weapons, but i don't use thyem, they start these wars on their own, all i do is orchestrate things i know they cannot keep so they destroy themselves".
He implies that it amps him here.
"What happened?". "The Humans turned against us". "But they worshipped us?". "We were gods to them". "Now they worship Machines. So i will build a machine that will destroy them all". "Build your strength, feed on them, and wait for me to return".
Enchantress heavily implies, and basically even states they feed off worship.
There, i backed up my claims.