I do feed Friskies canned Pate once or twice a week; some weeks not at all, and never more than one day in a row. It is the only canned food I have tried that all of my cats will eat and can tolerate easily, and new moms, who are sometimes reluctant to eat or drink after giving birth, will always eat the Friskies. Most of the higher end, better quality canned foods will make two of my cats vomit and some will not eat it at all. My kitties generally get raw on most days/nights, and dry---Taste of the Wild or other grain-free dry---left out to free feed.
I don't believe Friskies is the worst food a cat can eat. For picky eaters (and I have one)...sometimes it is more important that they ARE eating...I know of other breeders who also feed Friskies canned for the same reasons. Easily tolerated, tasty to most cats....
I feed canned along with the raw, since I have had a few kitten customers who will not feed raw, and I want my babies to be used to eating canned if that will be the case in their new homes. I send home a two-week supply of Friskies canned pate with each kitten, so new owners can transition to the canned of their choice, or continue a raw and dry food diet.
The one downside to canned Friskies is that when I am gone for a few days and leave the care and feeding of our cats to my significant other...who does not like to handle raw meat...I have him feed the cats the canned Friskies for those few days...the smell of their poop is sooo much stronger than when they are eating raw most week days!