Not true. If you can ascertain the guy has been a legitimate hounder for a long period of time, you can get some great autographs at great prices.
We picked up an amazing collection of autographs done in the 80s and early 90s by a fellow who worked for the CBC -- more than 12,000 signatures. Of course, we triple-checked the information and have no doubts to the authenticity of the signatures.
Those examples are few and far between, and almost non-existent for current players.