This will likely be an unpopular opinion here, but if you thought reddit was politically opinionated, holy hell Lemmy is 1000 times worse. I'm left leaning myself, but the majority of the posters here make me look like a moderate. There are even times when the rhetoric I see is approaching the level of toxicity I see from right-wing internet goers.
Fewer political in general is what I want, but it would be nice to see some actual diversity of opinions. Echo chambers are good for absolutely no one.
DDT is incredibly harmful to the environment and is heavily regulated in the US. It was also banned worldwide by the UN
https://en.m.wikipedia.org/wiki/DDT
I haven't found anything backing up the claims you've made.