Sure- but it was also a jumping on point for new readers who heard of the comic through the show. Didn't affect my reading experience, but I could see how it affected some people's collecting experience. Guess it depends on what your trying to get out of the series.
I say good for kirkman. If I created a comic that became this popular I think 15 covers for issue 100 would be an honor of sort. I chose to buy the two I liked, and I moved on. It's collectors own fault for trying to "catch em all", then get mad because more are being made. If you collect variants and can't see how they are money grabs that mostly depreciate in value over time, I don't know what to say. If you say you like the walking dead, what was your favorite scene, I'd say "Rick, you're back. What kept you"?