Yes, there are some wonderful people in there. Andy Seaborne has always impressed me with his thoughtful responses. I won't call out any of the bad apples. Usually a question goes something like, "Uh, I'm new to the semantic web and I'd like to do X" and the response is, "this is how it works, you're a dummy and you need to understand how brilliant the semantic web is and you don't need to be doing what you're asking for" or academics who will complain that they're not getting enough credit for providing their brilliant intellectual scaffolding.
Databases, that are run on a shoe string, aren't stable so we're going to make everything federated with linked fragments? Fine, give it a go but you don't need to go on and on about how databases are inadequate because someone isn't willing to foot the AWS bill so they can host dbpedia for ya.
Lets have a go at JSON-LD. RDF/XML is finally recognized as a mistake. A somewhat reasonable mistake because everyone was XML crazy at the time. So what do we do? The exact same thing except this time it's JSON. But it's even worse. We choose a serialization that is prized for its simplicity and we foist the entire RDF stack onto it? Then they claim that JSON-LD isn't about the semantic web so we're good and Jedi mind trick it with, "This isn't the RDF you're looking for".
Because we aren't done overcomplicating simple things we take aim at CSV with CSVW. Granted CSV has some subtle complexities but it's easy and reasonably compact. So now we're going to add metadata to csv files with rdf and then serialize it into JSON as JSON-LD. Great. How do I find this metadata. Either a well known location or in a link header. Whoops I can't publish metadata and reference your csv file. Lets convert your csv fie to rdf. WTF. my 500Mb csv file just became 1.5B triples and it's taking 8hrs. to load it into my triple store!
Don't get me started on people who call themselves ontologists. They're really zombies but instead of eating brains they eat budgets. They should be dispatched the same way, with a shotgun blast to the face. They generally can't justify their decision even though there is a framework to do that, onto clean. I have yet to meet one who even knew what that was. They just convince management that what they're doing is intellectually unattainable by mere developers although they'd be lost without protege, top braid, or excel and what they produce is generally an incomputable pile of garbage. It's always OWL full. "Class or property? Class or Property? Well is is an "is a" relationship."
I'm done writing so I'll just include a list of the half baked ideas that sound good but are a day late and a dollar short. LDP, R2RML, ShEX, SHACL, DCAT, RDF Data Cube, WebID.....
My wife always says to say something nice so I'm going to say SKOS. SKOS is ok.