Big +1 to this and here's another thing that I'd like to add to this.
Aleksib is the only one who has been streaming for quite some time (if you don't count the occasional streams by suNny and allu) and he answers chat questions etc... which makes him more likeable as an individual. You can get a picture of him as a person and the more you know about someone, the easier you can paint a picture of a person in your head. In general he's just a really likeable guy that most Finns look up to in some way.
If you compare Aleksib to any other Finnish player, they don't really share anything about the personalities to the wider audiences. zehN has done some Finnish interviews, which I've personally really enjoyed listening to, but it's still nothing compared to all the content (streams, interviews etc...) Aleksib has done.