Or, yes, you can take the presence of the free version as a sign that the professional service is freeloading, and take your business elsewhere.
I take this to mean that we have some kind of (perhaps-fundamental) difference in the ways in which we understand how free software works.
(That's OK, comrade. I'm not here to change you.)
All users all must take what they are given. If they do not like what they are given, then they must only contribute in the ways that are prescribed from on-high. No freeloading. No complaining. No discussion, even in the form of a comment on a completely separate, independent forum. If they are unwilling or unable to follow these rules, then they must pound sand.
Am I on the right track here with the intended restraint?
We are all free to have a slice of the infinitely-divisible cake, and also to talk about it when that behooves us. We can say positive things when it suits us, but we can also say whatever else we wish to as well.