Not anymore. Due to problems with BI, everyone, even non-donators, have access to sports hatchbacks, house crates, mohawks, debit cards, and I assume EVERY donator feature.
You have access to sports and mohawks, but I know for a fact that non-donators can only get sports hatchbacks in the "shit brown" paintjob. That's what made me donate - 50 bucks is worth not driving around in a rust bucket.
Two issues I've experienced in the past:
1. My friend dropped his Katiba on the ground for me. I picked it up with the scroll wheel menu. It disappeared from the game.
2. Right clicking on the Katiba's caseless mag while it's in my house crate makes it just disappear instead of being loaded into the gun. I have to drag it into my backpack and then reload the gun to properly load the ammo.
Not sure if these bugs are Katiba specific, all I really use is Katibas so...
https://www.bistudio.com/monetization
Basically, if any perks are going to come out of donating, it's going to have to be all cosmetic. Otherwise BE gets taken away again.