Every ant species in the world turns into MCU Antman Scott Lang. They start out the same size but of course can grow if they want to. They each have a lifetime supply of Pym Particles for their needs.

They all of course have Scott Lang's personality and memories.

How does this change the world? What's the environmental impact?

Bonus: Same as above but also all wasps become MCU Hope Van Dyne, with the same circumstances as the Scotts.