I have a Mr Beer fermenter. It's a concession to my physical state. I can't lift a big fermenter any more, so I have to make smaller batches. It's worked well for me.
I also just ordered a Mr Beer American Ale refill for it. The kits make really good, not spectacular, beer. I needed something quick. It was on sale. It was on a site where I get a cash rebate. It just seemed to make good sense.
Of course , me being me, I couldn't leave "well enough" alone. So, to the regular ale I added, 1 tsp coriander, 1 tbs orange zest, 1 tbs cinnamon, and 1/3 cup molasses. My intent was to boost the alcohol slightly, and make this a heartier tasting ale, for the cold winter.
Did I succeed? We'll find out in a couple of weeks. Am I bad for using a kit? I don't think so. I've said for years, if you make a wort and use yeast. you're a homebrewer. All the rest is choice.