
Foreign Muslims (who are not Arab) did not realize that they were worshipping Arab's god. Therefore, Muhammad was the Arabian Prophet for Muslims-Arab only.
Quran 27:91
"I was commanded to worship the Lord of this city, ( رَبَّ هَـٰذِهِ ٱلْبَلْدَةِ ) who made it holy and to him everything, and I was commanded to become a Muslim."
إِنَّمَآ أُمِرْتُ أَنْ أَعْبُدَ رَبَّ هَـٰذِهِ ٱلْبَلْدَةِ ٱلَّذِى حَرَّمَهَا وَلَهُۥ كُلُّ شَىْءٍۢ ۖ وَأُمِرْتُ أَنْ أَكُونَ مِنَ ٱلْمُسْلِمِينَ١

"Every Prophet was sent with the Language of His People"
Allah said in Quran 14:4;
وَمَآ أَرْسَلْنَا مِن رَّسُولٍ إِلَّا بِلِسَانِ قَوْمِهِۦ لِيُبَيِّنَ لَهُمْ ۖ فَيُضِلُّ ٱللَّهُ مَن يَشَآءُ وَيَهْدِى مَن يَشَآءُ ۚ وَهُوَ ٱلْعَزِيزُ ٱلْحَكِيمُ
"We have not sent a messenger except in the language of his people to clarify for them. Then Allah leaves whoever He wills to stray and guides whoever He wills. And He is the Almighty, All-Wise."
Arabic word = "بِلِسَانِ"
Arabic root: "ل س ن"
Meaning: from his mouth, through him, tongue, language, mouthpiece, speech
Also in Quran 10:47
وَلِكُلِّ أُمَّةٍۢ رَّسُولٌۭ ۖ فَإِذَا جَآءَ رَسُولُهُمْ قُضِىَ بَيْنَهُم بِٱلْقِسْطِ وَهُمْ لَا يُظْلَمُونَ
"And for every community, there is a messenger. After their messenger has come, judgment is passed on them in all fairness, and they are not wronged."
This shows that Muhammad was sent to his own people only, NOT foreigners.
Remember that Islamic paradise is meant only for Muhammad's people.
QUESTION:
So what do you benefit from worshipping the Meccan god?