WotC is doing the right thing to help D&D players from any ethnic groups to feel welcome and comfortable.
In the US, "ethnic minorities" include diverse groups of Muslims. There are secular Muslims who dont care about religion. But there are Muslims who do care about religion and practice the religion intentionally and actively during normal daily life. I want religious Muslims to enjoy playing D&D too.
What is true for religious Muslims, is also true for religious Jews, religious Christians, and other ethnic groups with sacred ancestral traditions. D&D is a game. It is abusive for seculars to try use D&D as some kind of ideological culture war to bully reallife Muslims, Jews, Christians, or other kinds of religious players.
It is a high priority for the Players Handbook itself − the core rules of D&D − to be inclusive and assume religious diversity. It helps when PLAYERS from diverse ethnic minorities find tropes they can relate to and feel comfortable with.
A religious Muslim is less likely to purchase or play the polytheistic Theros setting. That is ok. That said, I am impressed how Theros handles polytheism in a nuanced way, where the gods can also be villains, and to be an "iconoclast" who refuses to worship the gods is a prominent option within this setting. So, I sincerely recommend that Muslims check out Theros. It might be a setting that they can work with and find interesting. But if Theros is a setting that makes Muslims uncomfortable so they dont want to play it, then that is fine too.
I still want Muslims to find other D&D settings enjoyable.
It is important for the core rules of D&D to assume religious diversity and to welcome religious tropes in a way that is positive toward reallife ethnic groups.