"This room is a vision of what America should look like in 20 years."
What concerned members of the Alt-White branch of the Alt-Right really need to keep in mind is that attempting to criticize or control Milo is like trying to criticize or control a Category V Hurricane. It is not even wrong, or misguided, it is simply a category error. One cannot leash a force of nature.
Richard Spencer is correct to say that Milo is Alt-Lite, not Alt-Right. But that's just fine. And keep in mind that the whole force of the mainstream media's hatred only made him stronger, so what do you think adding your weight to the collective disapproval of him is going to accomplish. Milo listens to no one but his friends and allies. If you wish to have any influence on him at all, you had better learn to appreciate him and bring something to the table besides criticism and disapproval.
Entryism is always a legitimate concern. But the only way the Alt-Right will become irrelevant is if it succumbs to the tendency of its Alt-White spergs to purity-spiral into their own navels, in which case it will be entirely replaced by the Alt-Lite. However, I think this is unlikely because the Alt-West branch is considerably less prone to purity spirals and welcomes the training grounds offered by the Alt-Lite.
However, I am done trying to talk sense into Alt-Whites who are paranoid about those they deem "e-celebs" and determined to make neither friends nor allies of anyone who is not 100 percent white and does not buy 100 percent into whatever it is that they believe. They are irrelevant and we need not concern ourselves with them. To the extent they trouble to shoot at the Left instead of demonstrating their purity by aiming at us, they are useful, and that is sufficient reason to ignore their occasional attacks directed our way.