Not being 100% restricted to a certain ideology isn't the same thing as not being related to something about that ideology.
AI disclaimer (with sources linked, since it saves me some typing)
Countries with Highest Documented Rates:
1. Pakistan - Consistently reports around 1,000 cases annually
NCBI, with the Human Rights Commission of Pakistan reporting 1,100 cases in 2015
Sage Journals. Pakistan is widely believed to have the highest absolute numbers globally.
2. India - Records approximately 1,000 honor killings per year
Hbv-awareness, with nearly one-third of worldwide honor killings occurring in India and Pakistan combined
Asu.
3. Iran - Reported 8,000 honor killings between 2010 and 2014
Sage Journals, with academic estimates citing 375-450 such killings occurring annually
GOV.UK.
4. Turkey - The Council of Europe estimated over 200 women were murdered in honor killings in 2007
Wikipedia, with reports of one honor killing per week in Istanbul alone.
5. Syria - Some estimates suggest more than 200 honor killings occur annually
Wikipedia, with increases reported during the civil war.
6. Jordan - An average of 23 women are killed annually for honor, representing approximately 30% of total murders
Sage Journals.
7. Iraq/Iraqi Kurdistan - The Free Women's Organization of Kurdistan reported 6,082 women killed or forced to commit suicide in 2015
Wikipedia, with many attributed to honor-related violence.
8. Afghanistan - 243 cases were registered between March 2011 and April 2013 according to the Afghanistan Independent Human Rights Commission
NCBI.
9. Yemen - 400 women were victims of honor killings in 1997
NCBI.
10. Egypt - 52 cases were reported in 1997
NCBI.
Are we noticing any themes or patterns here?
If we were looking at the aspects surrounding negative attitudes toward contraception access, comprehensive sex ed, or stem cell research in the US...
Me being able to find a relatively tiny handful of liberal non-Christians who oppose those things wouldn't negate the reality that those attitudes are predominately found within (and outgrowths of) conservative Christian culture.