To clarify your O.P:-
Q) How serious do Elders view sexting?
Well I believe a "GROUP" of elders both " need" and " want" a judicial commitee. So my answer is:-
A) It depends who's sexting?
B) Who are the " Elders" victims that they can have a judicial committee with?
I believe the offense is not so relevant. Because I believe being a full fledged "Elder" they want to sit on a judicial judicial committee. Translation if necessary, siting on a judical committee is part of the ego of being an " Elder"
Ex "Elders" will hit my comments with their " rhythm stick." But I believe this organisation appoints men to "Elders" only if they are company men indoctrinated enough to want to sit on judgement on others.