I do 1/1 searches too, and there are probably 25 cards NOT numbered 1/1 for every one of these homemade 1/1s. These homemade cards are not the problem.
And you know, I have a player search for probably 20 different players, and this week was the first time one of them came up for one of "my" players. And you know what? If it had been a pretty card, I might have bought it just for the heck of it.
You know, some people collect players and aren't concerned with who made what card look like that. Some people would love a 1/1 of their favorite player but have no chance of pulling one (I was lucky in that my first 1/1 was of one of my favorite players) and could never afford one from eBay. This gives them a way of getting one without breaking the bank.