The 'gas pipes' or 'nests' as you call them, are part of the map.
They're different from the poison plants that stand up.
Compare them to the ground you walk on in the game, instead.
Devs mentioned in the last stream they did to end 2019 that they intend to change this.
This means that we will be able to destroy them in the future, after they rework how these gas pipes are implemented.
There is no estimated release for this feature at this time.