it may be worth noting that folks who use Google Earth for place creation may still need to work around the issue described in https://forum.inaturalist.org/t/place-longitude-must-be-greater-than-or-equal-to-180-error/8398. it should be harder to create a place in QGIS that will trigger the same issue.
political boundaries will often exist in an electronic format somewhere. in https://forum.inaturalist.org/t/creating-a-place-for-your-us-city-using-census-bureau-geography-data/21927, i describe how to get boundaries for US cities from Census Bureau data, if the city administrators don’t provide that data on their own. boundaries may also exist in electronic format in the OpenStreetMaps database or in Wikidata. worst case, you can draw boundaries yourself. there are some rough instructions for how to do this in QGIS in a follow-up post in the Census Bureau place thread referenced above. (it probably wouldn’t be too hard to create a tutorial for how to get boundaries from OSM, if there’s enough demand for that workflow.)
this restriction has already existed for many years now and continues to exist.