I think the point here is that there are two categories of "environmentalists", one of actual environmentalists who go out on the weekend and plant shrubs and monitor the Lesser Black-Tailed Whatever, and the other of people who don't want you to build something for other reasons but are willing to claim to be environmentalists to stop you. There's overlap between the groups of individuals, but their organisations are different.

The first group are generally willing to say "hey, here's a map of critical Ramsar-protected coastal wetlands and surroundings, we don't want you to put a pipe anywhere BUT if you really have to then this section is regrowth and was drained in the 60s".

The second group are just obstructing you by any means they can and want to push you to a neighbouring town, who will also obstruct you. They'll switch to heritage listing, archaeology, noise complaints, smell, neighbourhood character, the moral character of your workers, or literally anything they can use to shut you down. They're not going to accommodate you by shifting the pipe slightly left because they're generally motivated by not having a pipe near them at all.