It's all about predicting the value of some constants in the future.
I've no idea what they would be in 10 years.
I'm sure there are people who have much better idea than I.
While (I think we'd all agree  that) predicting technology decades ahead is hard,
 it is not impossible that a group of specialists,  after a thorough discussion, could
get the prediction about right.
May be we should all bet on them to make it. (No sarcasm intended.)

However it seems reasonable to me to try to find a solution that would involve
predicting fewer constants, and minimize the impact of not getting these few constants
right.