Yea, not anymore considering they dropped the gag at the end of S5 and they are now beginning their 27th.

Ugh, I hated the shoehorning of Butters into the group dynamics during Kenny’s absence. Rubbed a lot of fans wrong to the point the backlash forced writers to change the ending of that season and bring Kenny back.

I too wish they would have kept the joke going. Or at least occasionally make reference to it now and then.