I think why Ryan seemed slowly okay with watching that man get murdered is because they are showing (especially during that fight) that Ryan actually is starting to love Homelander as a Father. He calls him Dad -- he even thought Homelander was mad at him before that touching moment where he told him that he was the only one that would ever understand Ryan and he wouldn't treat him like how he was treated growing up. Ryan didn't have a Father either, had a Mother that tried to hide everything. Homelander, as fucked as he is, shows genuine care for his son and after killing that man and the crowd cheers. Homelander was shocked he was loved for it. Ryan probably saw it as "My Dad is powerful and can do what he wants and people love him for it, and they love me" kinda thing. Season 4 will probably have some sort of focus on Butcher trying to save Ryan and his humanity from going down the path of Homelander.
For the rest of the points. Yeah, no idea how Maeve survived that after being turned into a normal human. They were overall rather up and down with Soldier Boy's blast and what it could do though. With Kimiko it just wounded her and took her powers. At New York and Herogasm he disintegrated people and other supes. During the last episode, he did some damage to the Tower but overall (besides losing her powers) Maeve had no wounds from the attack or the fall.
The Noir thing really sucks that he was killed so abruptly but at the same time. To me. It makes sense and falls in line with Homelander and his ego. He doesn't like being lied to so when Noir tells him the truth that he knew he had a 'dad' out there somewhere -- I mean you saw what he did to Stillwell when he found out she lied to him about his son. Would you expect anything less when someone didn't tell him about his dad?
Also now that I'm sort of on the subject of The Boys. Homelander's laser eye beams seem rather inconsistent on what they cut through and how much damage/force they do. Same with his strength? Also... Homelander can literally fly unlike anyone else (save for Ryan) and with how much of an ego he has. He never flies up out of reach of anyone and just fucking beams people. Fighting Maeve or Soldier Boy where they can try to hold him down? Nah. Stand on the ground and try my beam. He also shows that he is strong enough that when he reached for Maeve, she grabbed his arm and couldn't stop him from just poking out her eye -- yet they seem evenly contested in strength multiple times throughout the fight with Maeve seeming to get an upper hand sometimes?
But overall I think the season was pretty great. Ending didn't go as I expected, still sort of processing it and how good it may have been I suppose.