Veneration is enormously culturally subjective. There are many, many, many cultures that would have seen placing the skull of an ancestor in a prominent place as a very, very, very obvious sign of respect and power.
But, my people don't engage in ancestor worship. I come from sad stock and I'd rather be forgotten after I die.
But the context of this thread involves rather obscure and private locales, such as a bookshelf in Chad's garage, or an incel's 1BR apartment. The foot traffic and availability would be near-zero.
I'm not sure how you leapt from that context to "a prominent place".
Compare this to the custom of churches holding relics for public veneration, such as embedding them in an altar, displaying them at a shrine, or in a reliquary held by a priest for people to line up and kiss. Or the standard custom of cemeteries and mausoleums which are open to the public at all times of the year, which offer sacred consecrated ground, and religious/spiritual context for those who venerate the remains.