I think you exaggerated a lot when introducing gypsies as scapegoats and percecuted. It is the other way round - the ottomans were using them to do their dirty jobs.
https://wikiislam.net/wiki/Turkish_Genocides_-_The_massacre_on_the_Bulgarian_population - Turkish Genocides: The massacre on the Bulgarian population
https://attackingthedevil.co.uk/related/macgahan.php - The Turkish Atrocities in Bulgaria: Horrible Scenes at Batak
and worth to mention, gypsies were there as main criminals, which is documented.
RE: Istanbul's gypsy quarters or life beyond the law