Erm yes they do exceed 100,000, they are in the millions and own cities from Jeddah to Taaif and Makkah and are scattered across the country and have strong holds like Jazaan where many Caqiiliis live
Also many Hashemites moved to Africa because of many fitnas happening, many times in history they went to war with each other and kept on extemrinating each other, and it was recorded in the books of 3 major Islamic historians a huge Qurayshi presence in the horn where they colonized the Jabarta city and from Massawa to Berbera
They live all over North Africa and other parts of Asia too, they migrated as Sheikhs, governors and migrants
And no it's not far fetched they are above 5 million, Darood according to YFULL is 900 years old only and we are 20 million
The Quraysh themselves admit they got massacred and scattered and forced to move in mass to Africa it's in their oral history
Also you must understand Darood fully adopted the Somali culture and at the time were pure Arabs so we became expansionist nomads conquering others and became the largest Somali tribe
Hawiye is also a migratory Arab tribe who arrived in the year 1000 this matches YFULL and is recorded