Below image appears to indicate that the vector layer data was identified as NAD_1983_HARN_StatePlane_Florida_North_FIPS_0903_Feet, which is a well known (to QGIS) CRS. However when the layer was added it was automatically converted to WGS 84. (I presume WGS is an excellent "universal" CRS?)
Is the conversion algorithm inside QGIS to WGS just (about) as accurate to telling QGIS the specific source CRS (e.g. NAD_1983_HARN_StatePlane_Florida_North_FIPS_0903_Feet) ? Is there great advantage to specifying the CRS vs. just allowing the automatic conversion to WGS to occur?
I will likely add a OSM layer (not sure what CRS that will be) and may need to add other layers from the U.S. Census, Google Maps, etc. Wondering if I should pay close attention to the CRS specifics of each layer, or just rely on QGIS to convert to WGS and call it a day?
I understand in general the basics in 7.1 Lesson: Reprojecting and Transforming Data, but remain uncertain on the specifics.