That's a petty accusation without any evidence.
I've been involved on the development side of projects that offered early access test for an additional fee, but none of them used the community to replace professional testers. It was basically an opportunity for us check for unexpected compatibility issues, collect some extra revenue from those with deeper pockets, to let folks get a taste of things a bit early, and collect some handy feedback/ideas to make the end result better. You don't get to be a professional studio by outsourcing your testing to volunteers/customers.
One outstanding exception to the above is Kerbal Space Program. Until very recently Squad relied exclusively on two tiers of community testers with only a testing coordinator on staff (and even that coordinator had to act in a volunteer role for years). Although the game is great fun, it was a buggy mess and the studio put outrageous time demands on those in the testing program. The turnover was tremendous and the result was that the quality of the testing was abysmal.
Simply offering early access shouldn't be used as an attack vector of "you're replacing testers with customers!!!111one."