I think the reason why a lot of people fail to see how Bakugou & Izuku could be 'siblings-coded' is because they underestimate just how intense sibling rivalry could get (especially for those with close age gaps) and how they never fail to care for one another despite that.
🧵
Also, not to mention the protectiveness they have towards eachother despite persisting conflict reads as an involuntary loyalty that is very common amongst siblings
This being said, I want to add that this how *I* personally interpret their dynamic (which is highly influenced by my own personal experience with siblinghood lol), and you don't necessarily have to agree with me.