dave2008
Legend
That is not what they are suggesting. They are say use the modifiers only (it is in the part you quoted) like PF2. So instead of a strength "18" you have a strength "+3."So how do you do this? Roll a d6 and subtract 3 to give you -2 to +3 on every ability?
People may not like the default 3-18 ability scores, but using multiple dice improves central tendancy and decreases variation.