In a way I think the more absurd the concept the more attractive it is for more conservative believers.
I assume that you are talking about
theological conservatism there. And theological conservatism
means adherence to and being guided by tradition. So to the extent that modernist orthodoxies deviate from that tradition, theological conservatives are going to find themselves out of step with those later beliefs.
We don't see liberal Christians attracted to YEC.
Instead we find theologically "liberal" Christians battling to reinterpret and reinvent the tradition in terms of whatever beliefs are popular in their own time and place.
The danger in that, as the theological conservatives see it, is that tradition becomes 'Whatever we want it to be'. The tradition is drained of all of its historical (and arguably revealed) content. It ceases being a guide to contemporary life and instead becomes just another expression of contemporary ideas.
Little remains except the tradition's
name, like the Cheshire Cat's grin in
Alice.