My understanding was the bombers were only deployed because Poe himself deployed them. They weren’t part of the original mission and only came in when Poe audibled after succeeding with the first part (which Leia had believed was the ONLY part right up until he kept going)
I think a lot of Last Jedi arguments tend to snag up and break down along the basic right/wrong questions, when the movie is interested frequently in acknowledging the motivations behind why people are doing the things they’re doing, but not always justifying those motivations, either. That’s a huge part of the engine that fuels The Last Jedi - understanding isn’t the same as acceptance or agreement. “Poe was right” isn’t even really the point, and it’s why discussions tend to break down along the lines of people trying to prove he was “wrong” as a counter, and people reinforcing their belief that he was “right.” and round and round from there. You can be “right” and still make the wrong call, and that’s hard. But it’s also true. And learning from THOSE experiences are vital. The Last Jedi is a movie all about those moments, and a lot of what it’s saying and doing just blows right by if ultimately all you’re talking about once it’s over is whether or not the justifications for their actions are sound.
It’s partially why Rose/Finn and the speeder KEEPS coming up, because people are approaching the scene from the POV that “Finn was right to do what he did.” and the question isn’t even so much whether he had the justification, and whether he was right to make that call (and whether Rose was wrong to stop him). The question is precisely along the lines NFB very clearly laid out in their excellent posts above.
The Last Jedi is a movie that very often puts its characters in situations where they honestly believe they’re doing the right thing, and most of the time they are. Their reasoning is understandable and their intentions are good. But it still goes wrong. That’s frustrating and complicated and annoying. But it’s also NECESSARY in a lot of ways, and for me, hugely relatable. Especially when it comes to Poe and Finn’s behaviors in this movie. Often they’re just as interested in doing the big thing as they are doing the right thing, and they think a lot about how to make the big thing as right as it can be, and that’s why they miss out on doing THE BEST THING. They’re more concerned with doing THE MOST instead of figuring out what will allow them the biggest chance to do THE BEST. That’s not easy, and it doesn’t get any easier if you spend even more energy retroactively justifying why you made the one choice instead of refocusing and learning why that choice didn’t work.
The Last Jedi is a movie that ultimately says “you can do what you’ve always done and get mad when it doesn’t work like it always worked, or you can acknowledge that things keep changing and you have to change to get ahead of it.” I think it does this well, but I also understand when people get caught up in the minutia of why things aren’t working the way they always worked.