Dude. I agree with everything you said. I love Star Wars and Empire is one of the best films ever made but the original trilogy as a whole is super overrated and I’d even go so far as to say Return of the Jedi is mediocre at best. The throne room stuff is brilliant, but is that worth the other hour and a half of boring filler nonsense? Barely.
Infinity War is a modern masterpiece. The scale, buildup, acting, stakes, pace, action, emotion, and even humor are all on point. Aside from a few fair critisisms such as a few small plot holes (what movie doesn’t have them) and the fact it jumps between several groups early in the movie (it takes ridiculously long to get back to Tony and Strange), most complaints people have don’t hold much water imo. And even that one is kind of necessary for this kind of storytelling. People just don’t pay enough attention, don’t understand what this movie is, or both.
As far as trilogies go, why don’t we throw in IW with TWS and CW and call it the Russo trilogy since they didn’t direct first avenger. If you do it that way they made arguably one of the best trilogies ever, right there with but just below The Dark Knight Trilogy. Again this is all my opinion.
Overall, I give IW a 9/10 and it snuck into my top 15 of all time. Best sci movie ever? I’d say no and I’d give that honor to the first Terminator (yes I like it more than the 2nd one, I know I’m in the minority on that).