No, MAC addresses are encapsulated at the link layer so twitter servers will never see it (exception being if you are on the same local network as a twitter server, since packets travel between many different nodes on the way to their destination, the MAC address will change between each pair of nodes)
Can twitter even see and or verify a user's MAC address? It might be able to get it on the client using javascript or the app, but idk.
No, MAC addresses are encapsulated at the link layer so twitter servers will never see it (exception being if you are on the same local network as a twitter server, since packets travel between many different nodes on the way to their destination, the MAC address will change between each pair of nodes)
This post deserves more upvotes because I have a feeling a lot of people don't know how arp works.