I don't think anybody is saying there is an easy way to be objective. Objectivity being difficult to achieve is still a far cry from impossible, not an excuse, and nothing new. Since ancient Greece, philosophers have been devoted to building logical processes and ethics in order to make it more possible to get close to the objective truth, such as the Aristotelian processes of observation, abstraction, definition, induction, syllogism, the definition of archai (first principles), etc.. Objective truth has always been elusive, but its pursuit is something that historically has allowed civilization to advance (especially true for western civilization).

Now we are hearing excuses (including in this thread) which are nothing more than cheap cop-outs, they are rationalizing their own acquiescence or surrender to intellectual laziness, logical fallacy, ignorance, and social irresponsibility. The fact is this lowering of standards is very useful for some people, and provides wiggle room to dishonest liars and frauds who would otherwise not be trusted, should be obvious.

Yes, one's senses are limited, one's knowledge is limited, and while investigating a story you are likely going to hear different versions from every witness to whom you speak. But what do you say to those who refuse to listen to contradicting yet valid information and/or viewpoints?

There is a large gap between those who are engaged in the pursuit of objective truth who nonetheless fail, and those who have their excuses loaded up while they tirelessly work to build consensus around what has become a narrative for a completely false reality. We are starting to see a bias against objective truth, a prevalence of defense mechanisms against logic and reason, and more and more demands for "allegiance" or "belief" in a given agenda-based narrative.

With more differing points of view intermingling than ever before, giving in to bias has never been more dangerous.

tldr: Just because its hard doesn't mean its not an important pursuit, much less take it as an excuse to accept the defeat of lowered standards or actual fraud for our perception of reality.