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I fixed it with https://www.openstreetmap.org/changeset/107595401 and the standard is https://wiki.openstreetmap.org/wiki/Names#Abbreviation_.28don.27t_do_it.29 - Doing mass updates of U.S. Census TIGER data to expand the abbreviations has been allowed on OSM before.  The new ones you see are generally manual entries.  I change them when I see them, and I've never had any pushback.  A month ago or so I went through some sections of Peoria and expanded these manual abbreviations, often in the areas where you were adding notes.  In the Merkaartor editor, I creation a validation filter style that lights up roads green if they don't have spelled-out directional names, similarly to what it does in orange for roads without names.  Outside of Peoria Co. it lights up whole cities (e.g. East Peoria) green, but that's fine because I know what it means.