The xenforo skin works because it's built in and all the add-on modifications are made to work with it. Custom skins are not. We spent a lot of time getting this custom skin working with everything.
If I have to do it for another custom skin, it's going to take hours. So there's a difference. Seems pretty obvious and logical to me. There's nothing "new" about this skin. This is the same default skin we've been using on USMB dating back to 2023 and the last upgrade. We had a few people on the "old" skin and spent a lot of time getting it working with the last upgrade. I played around with it for an hour trying to get it working on the new software version but there was too much that was broken and I gave up.
Believe whatever you want to believe. If I was trying to force people to use this skin I wouldn't have bothered getting the default Xenforo skin going... but I did... because????? Because it didn't take hours of work, only took 2 minutes of work because everything works with it.
As for the eagle: No, I can't get rid of it. There has to be an icon there, I like that icon... no matter what I choose to use there someone's going to bitch about it.