Yeah really! I guess they are more persistent than we all originally thought.. but I seriously got to the point where I skipped the entire part where they appeared in an episode cause I was so tired of the same old thing. Motto, battle, capture/attempt to capture random Pokemon or Pikachu, get destroyed horribly [usually to Pika], blast off. Now we're finally getting something new to view! Not too much has happened as of yet, but the plot is gradually building. They also might run into Team Plasma in the anime, cause Giovanni warned TR about them and I saw them in a big preview for some of BW's 2011 episodes up to about the 3rd gym.
I can't wait to see what kind of conflict might erupt if they encounter them! You should watch though, Best Wishes is actually really entertaining and I'm enjoying it so much! Much better than DP's season was, that's for certain. Yeah you can, especially if you're leveling your starter exclusively. Heck, you can beat an entire game with just a Focus Sash + Flail Magikarp if you wanted to. XD;