What does this even mean???

Are you sanctioning this condescending belief that only those "in the field of expertise" can opine on said field?

So just because Ayn Rand didn't have a degree in economics she should have exercised intellectual "modesty" and never mentioned capitalism at all, ever because she didn't have the arbitrary, subjectively defined honorific of "expert" in this field? Mon Dieu!

Not trying to argue here, I'm legit trying to understand your point and I thank you for the clarification, especially if I misunderstood.

Otay Zoomer. I’ll leave you in bliss.

"...will require us to be more intellectually modest"

LOL, okay Officer Karen of the Thought Police. I'll try to stop using my rational faculty when it comes to observing facts of reality and commenting on them.

Intellectually modest. Well...I DO tell me kids that it pays to act stupid sometimes. But, that's not what I mean. I mean to do it like Muhammad Ali's old "rope a dope". Haha...

Sigh. All those years of education and training wasted if logic will suffice entirely.

I suppose it was inevitable with the denigration of professionalism.

That's like saying, "Hey! You can't use logic over here! Only in your own area..."

[T]his will require us to be more intellectually modest.

Collectives may BAN. Individuals must exercise discretion.

Enforcing rules against this 'trespassing' is the job of government licensing agencies. It stops good designers from calling themselves architects, and good therapists from identifying as psychologists.
It is meant to protect the public against imposters. Maybe, what it clearly does is protect the insiders from competition.
Comments about climate change are sneered at or censored out if the source is not a peer reviewed qualified climate scientist, that is, a club member. Likewise, comments about religion were once banned unless from a qualified theologian or priest.

While arguments can go back and forward as to the 'utility' of this kind of banning, it is contrary to Objectivism which holds that opinions and expertise are to be judged by the public and valued by payment.