Ok but on the other hand I’ve seen this happen quite a lot on Lemmy and there’s really no excuse for bringing over all those sensationalistic headlines from articles.

It would just require for OP to choose a better headline instead of mindlessly copypasting the one from the article. No need to come up with another one, declickbaiting could be as simple as removing the most hyperbolic claims (“changes history”) and leaving the rest as is.
Given that you have the freedom to even edit posts’ titles, it seems Lemmy couldn’t make the task any easier short of doing it automatically.

It really brings down the quality of browsing Lemmy, which can become as tiresome and demoralizing as browsing the clickbait news sites themselves. Not every new discovery and breakthrough has to “fundamentally change the way we think and see the world, revolutionize society, alter humanity forever, hug your mom, and make you breakfast” and that way of thinking that these headlines promote is highly detrimental to scientific research and discovery.