I got the impression Erdogan has widespread support; they described his base of support as being primarily in the eastern part of Turkey, yet Istanbul was packed with people facing down the troops.
If you are Turkish I’ll defer to your take on the matter; as you say, many Americans don’t deserve the affliction of Otoken (yet I believe more than half do deserve it here).
I’m not Turkish - and my knowledge is spottier than those who really know a lot. But from what I’ve read (and who knows....) his support is defintely not overwhelming, the last election he “won” by 51%, so that means 49% don’t support him. And if Turkish elections are like the ones here, they’re rife with fraud.
Also, the night/day of the coup, coup supporters were told to stay inside by, so the streets were filled with Erdog supporters. Plus, IMHO the whole thing was generated by Erdog to flush out his opponents and terrify everyone, and to enable him to do exactly what he has done. So IMHO the street thugs who butchered and tortured the soldiers who surrendered (apparently under the impression that the whole thing was an exercise) were already johnny on the spot to do their butchery.
Coup supporters among the population were inside their houses. And good that they were, or they would have received the same treatment.