Well arguing head on can be my thing as well, I just don't do it in the style of HLTV because it doesn't really suit my personality, and also because if often involves some levels of irrationality that I prefer to avoid. But thanks for the compliment.
No I don't think you could legitimately put the 5 astralis players on the top5 (well, I guess you could but then your ranking wouldn't really be an individual ranking anymore) even if you take into account team achievements, it's more of a matter of weight, HLTV puts a bit of weight onto tournament wins because they consider that the best players in the world should be able to lead their team to some wins, which is a defendable position, but putting all the weight on tournament wins means that you're just recreating another team ranking, which isn't the goal.
It makes sense for people to wish for a purely individual based world ranking, but I think that when you're ranking the 20 best players in the world, it makes perfect sense to expect them to have sufficient impact on their team to bring back titles, because after all, what's the point of measuring individual players' skill if that skill is not able to bring you the W? Without of course only focusing on that to determine the ranking, but I think it's a good thing to at least have some of the weight on that, What could be good is to know how much weight is put on it, which afaik is not known.
I agree that simple rarely underperforms, which is why it's all the more surprising to not see him with more titles, and that's not a new issue, he has always performed extremely well in the stats department ever since he came into the pro scene, and yet so far his teams have failed to dominate, or in the case of this year, at least be able to stop Astralis from dominating.
So this brings the question: is his performance impactful enough? So far it doesn't seem like it.
I think measuring device's impact is probably trickier because of Astralis' playstyle. They don't seem to give a lot of freedom for individual plays and instead focus on "safe kills" and favorable trades, so it's kind of expected for the stats of their players to even out at least to some extent, but honestly I haven't crunched the numbers, maybe device actually has some stats which are indeed more impactful than his teammates, such as how many rounds won when he got at least a kill, etc... In fact given the fact that only dupreeh is also in the top5, it's quite likely. Impact is hard to determine without having the numbers, only judging by what we watch in the matches it's easy to fall for the confirmation bias.
I guess we'll see about that when his article comes out, but I wouldn't be surprised if his impact stats are better than his teammates' by a significant margin.