As an entrepreneur myself, I understand their decision, because money still matters. PDP is a hugely successful entrepreneur and FG and tCR are small independent studios (also very successful). I think it's natural that they co-operate. Marketing is -extremely- expensive, if you want to do it the traditional way. Personally I think him being the "spokesperson" doesn't affect the quality of the product itself.
If it was suitable for him to advertise a small law firm, I'd probably try to co-operate with him myself