Well.. my judgment was based on the facts from the article, which are mostly about the amount and sophistication of equipment. I also read more facts from this link posted there as a reference https://apnews.com/article/unga-threat-telecom-service-sim-9... - they mention 300 SIM servers and 100K SIM cards which is quite impressive as for me. Also, for some reasons all of this is clustered around the UN facilities (in 35 miles radius). Even if all of this is related to spam only activities this is quite a large investment as for me and that's why I'm not really convinced this is just some "normal" thing to see.