Of course not. Vitali comes to fight, and likes to hurt people. How could that be boring? It takes two to make a fight. He's had a couple boring opponents (Kevin Johnson, for example), but Vitali's not boring at all. The people who say he is are generally butthurt jealous types like Lennox Lewis.
Yes, in general he is boring Cormega, Don Draper, Dynamite, Guyfawkes, hungover, JASPER, lion, P4PMex, RafaelGonzal Liars, haters, alts, racists, or all of the above.
His opponents make it boring when it is. He beats some so easy. He comes to fight, can't call him boring.
Vitali is a defensive wizard, he's very hard to to hit his style is difficult to copy, even though he seems robotic, he is NOT a boring fighter
Lewis, Sanders, and Chisora were entertaining. The first two being amongst probably my 25 favorite fights in HW history.
He's an unorthodox kind of slugger, he's entertaining. Doesn't lose a round, just comes to punish his opponent.