I don't think its pandering to a select group of users as much as its been their desire internally to shrink designs down.Apple shouldn't be pandering to those people who want the macbook pro to be thin and as light as a feather.
I also don't think the thinness is the major reason apple went with the soldiered ram but rather a major factor is planned obsolescence.
The proof will be in the pudding when the newer models come out later this year. Will the cMBP have ram soldered onto the logic board or using proprietary storage