“Because everything is getting buggier than a freaking locust”. A locust is a bug, like the other bugs mentioned in the lines. He is saying life is getting buggier/ more annoying than all those bugs.
Also, Lotus is another member of the group Unonimus is in, Economical Plague Anti-Swag Forget the Radio.
Also, spitting while killing cock roaches is saying that he is murdering small weak rappers by rapping. It is also a reference to the music video of the song this song was a remix to, Tyler, the Creator – Yonkers. Basically saying that he is eating these roaches/rappers then spitting them out.