I'm not someone who's fighting for Loadiine as I prefer the WUP installer method as well but as everyone's bashing Loadiine here I give you a very small reason why some people (and I am one of them) are still using it:
I've got one big USB drive attached to my console. It contains Wii and GameCube games for my vWii mode. Of course it is formatted as a FAT32 drive. That means -> No WUP installer to USB for me.
Of course I installed a few games to sysNAND already in order to play them online but I don't want to spam it over completely. Fortunately I've got a 128 GB SD card which is already containing a lot of games back from the time where Loadiine was "still a thing".

As soon as Dimok releases his FAT32 support for Mocha I'm gonna kick Loadiine and put everything on my big drive I'm already using for vWii but until then: Why would I stop using Loadiine?