AQUANOVA
I'd agree with you, but then we'd both be wrong
Can you move your pinky in concert with your ring finger?
As if they were a single finger?
if so, then that's a perfect use case for "124" / Upright / Simandl /Carole Kaye style fingering
The under communicated "secret" to long stretches is:
you are allowed to move your left hand to reach
Beginners are usually given the impression that the left hand must lock in to one "position', and place the biomechanical burden entirely on the fingers to cover some four fret span /position. This is absolutely not the case, and indeed will make reaching frets -especially lower ones- harder and more uncomfortable than is necessary. if your fingers can't reach, just move you left hand.
What mambo said.
Use your ring finger up against your pinky, or slightly on top of it.
This will give your pinkie strength and better control.
I find myself doing this occasionally, and my pinky is fine.
If you just start playing, your brain and body have a way of adapting and finding the most efficient way.
Trust that.