Except it does matter, it affects the spanners strength and ability to grip.
Try thinking for yourself once in awhile rather just eating up marketing ******** about snap-on. The tools they make are NO BETTER than any other tools from a decent manufacturer.
I have the combo set from them, with standard open ends. They are all broached on centre, like they should be.
The best flare spanners i've used from from Gedore, Stahlwille also make very good ones.
Toptul do a great set for £38 if your in the UK;
https://www.ewsupplies.co.uk/shop/tools/wrenches/sets/toptul-gaat0502/
Better than poorly made snap-on garbage any day.