There were tens of thousands of people in the fourth layer, most in the Immortal Venerable Realm, some in the Immortal King Realm, and even fewer in the Immortal Emperor Realm. There were also a certain few shrouded from the common eye, those who did not wish to die but also did wish to ascend their plane and traverse the Immortal Funnel.
They were typically seen as outliers among their kind and steered away from the Immortal Transcendents actively exploring the Immortal Funnel.
Luckily for them, most of those who left for the Immortal Funnel never returned, so they never had to worry about being called cowards.
Those weaker than them could still sneer and make fun of them behind their backs, but what did that matter? They were stronger, and as such, the opinions of weak nobodies mattered not.