On top of all the legit reasons here my former, itsy bitsy company geo blocked everything not US/Canada because our customer base was entirely US based and that wasn't changing. The only traffic we got from overseas ips was looking for vulnerabilities. So why not just block it.

Ngl, most first level support I work with are not the brightest. There is a reason they are first level and on phones, and it's not because they are subject matter experts.