I've heard that that's happened to a lot of people! Tbh, I haven't played much of the game since I married him, so I'm not sure if that's the case with me! I sincerely hope not, as his snark is exactly the reason I fell in love with him!
Haha he's a little brat, but I love him so much. My Imperial focuses more on stealth and strength, and not really magic, and I just wanted a follower who would stay alive and make lots of comments about things. Marcurio usually hangs back in a battle and uses long-range attacks, and has the capability to heal himself, so he was perfect for me!
But I can understand how he might be a little annoying!