For one, they’re not like cases.
A portion of the community makes halflings in strength builds. Many folks would like to do so more but don’t like being behind others of the same build. That’s all that matters wrt to strength halflings.
OTOH, levels reached in most campaigns matters to the specific argument I brought it up for, because I was stating that it’s an unfair counter argument to say “the halfling will hit 20 strength anyway, so there is no real difference”.
You have either forgotten, or ignored in the first place, that my argument was that most players, if they get 3 ASIs, won’t do so until the very end of their campaign. Ie, most of their career/campaign is spent behind the Orc Barbarian in strength.