1) Because LIT is safer for Patreon, they go ape shit over beast stuff for some dumb fucking reason.
2) Because he's working in Blender, with extreme quality models, lighting, really performance heavy stuff. It literally takes time to process that, even on a god tier rig. Because they're uninteresting to you? Don't see how that's "his" fault and how it should be valid "criticism" to judge.
3) He can't just make a 30 minute video, gotta do it in parts. Think of it as, you write an essay but don't save until you're done, boom PC dies. Now if you save every other time, you can't lose much progress. There's also the thing where he wants to at least reward his patreons.
4) Quality > Quantity, also, commission them then? I don't see how "more enjoyable videos" is another valid "criticism" here. I found the LIT and Gate to be enjoyable despite their short lengths. LIT has action, where as Gate has that 'I can't wait for this'.
5) Not everything needs an answer. Idkw people want that. Imho, I don't want any male humans in almost anything adult related because I find it boring. Do I go out of my way to hint my demand to remove them? No. All that matters (to me) is she's in that situation now and she can't escape. Will I be salty if he adds said person, no, I just hope it's at least an attractive female who's sexual urge somehow surpasses my own.
My idea to you is, trying making smut in SFM, arguably the easiest out of the bunch for creating porn. Once you try to make even a decent animation you'll understand why Blender takes so long. It's much more stable than SFM but that doesn't mean you can just breeze through it. I'm 100% serious when I say you should try it, even making a poster can be... Difficult, a lot of time goes into just the pose alone.