The only way to get around this is to make playlists that are just different albums, which is what I do. Not a great system, and I think it has actually changed the way I listen to music for the worse

Some of the patterns sound really good, but can you change the bpm? I think a DJ set at the same bpm all night would be kind of boring. I love acid techno, but I mix it into other (sub)genres, and have never heard a set where it was only acid techno. That said, it sounds like some of the drum patterns are more electro than techno, which is nice and provides some variety.

Ah thanks! Didn't catch that. Not an issue really, but come to think of it, I personally I would add the bpm number, and put that control at the top.

Bottom left next to the meter is the clock - turn it to change BPM.

I think the feed also shows ads/"promoted content"? Or that may just be the stories feature. I've had my account deactivated for a few months so I might misremember. Usually the ads I remember did not involve half-naked people, but I think it's a subjective measure, and so influencers' promoted content could be racier to some than others.

I agree. I think presentation skills can be learned by anyone, regardless of personality. Maybe some people will have to work harder to develop them, but it's possible. I'm pretty introverted, but I have worked as both a waitress and a DJ. Learning to interact confidently with the public is just a skill for those jobs. Extroverted people might just master it more quickly.

Are you implying that this:"Humans are not all equal in proclivities or even innate abilities,"

is the cause of this: "Certain demographics are less inclined towards certain jobs"?

If so, I would be interested in what sources inform this opinion.