It's still pretty common over there, around 60%-55% of AMAB babies are circumcised. Aside from cosmetic and cultural factors, a lot of people get sold on the idea that it has benefits to hygene and overall health outcomes. These aren't good reasons of course, and the boons it provides are mostly marginal, not enough to justify inflicting that on an infant.
That being said, there is significant evidence that circumcision lowers the probability of HIV transmission and as such it may be beneficial for adults to undergo the procedure voluntarily in regions with high infection rates.
Frankly, my research into circumcision as an HIV prevention measure was a while ago and I took UNAIDS on their word for it. I believe this counts as talking out my ass and I apologize for that. Being corrected on this is something of a relief since it means one of the arguments in favor of circumcision being disproven.
I would love to read the research you mentioned.