Well: yes, a general answer is better, no, and the difference in Model isn't the reason for the discrepancy.
Yes, UDP and Ssmall are the only ones who claim to be delta who aren't in my opinion, in this thread. Delta isn't a very popular quadra, unlike gamma and beta.
A general answer is better, because nitpicking little nuances in what someone has posted is a generally unhelpful process across a medium where you really can't tell very well. This moves into the next question, because what you can tell from someone's typing is focus, which relates to type. But there are a few huge problems with this. First is that the same topics and schools of thought can apply as interesting to most types. Second is that some people get a smattering of what their type should aim at in conversation and try to copy this. This comes off as unnatural and absurd to the eye of the observer, but is hard to tell through what is written. Third, and most important, is that to prove a logic point to someone they have to think with logic, and have the same background inferences as to what elements are represented in what. Most people on this forum have no actual idea of what those are, in my opinion.
So no, they do not and cannot use functions they don't have. This is true of Model X, and where Augusta is very neutral on the topic, a deluded bunch believe that you can "use" the elements at will, simply by describing something in a manner which sounds like what someone who sees in that way sort of sounds like. It's akin to a person who's been entirely colorblind all their life try to describe the world in color after hearing other people who can see in that way talk about it. Horrid and unbearable to watch; even more insipid to believe.
The reason for the discrepancy is that Niffweed doesn't understand the functions, but is very nerdy and people assume he is correct. He isn't.