When you talk about SWM, ppl just focus on defending their favs, but imo the thing thts majorly overlooked is how it creates a major plot hole in the pensive system. Technically, Harry dives into Snape's memories, and even then we can see every second of what the marauders are doing, even though Snape isn't looking at them and is said to be immersed in his own paper, both during and after the exam. Even worse, how tf cud he have heard exactly what the marauders were saying even tho they weren't sitting remotely close to each other? Adding on, Snape only tries to get his wand out when james calls out loudly to him, otherwise he would hv known tht james and sirius were coming for him if he could hear them all along. The whole goddamn chapter is named 'Snape's Worst Memory' and yet we witness stuff even Snape couldn't see/hear when he was actually going through it. As much as I love the fact that we get a glimpse into what the marauders were like at Hogwarts, I do wish it was shown in a way tht actually makes sense (as I do with 123693674 different stuff in this series......)
It does make sense, but the way pensieves work is very often misunderstood in the fandom.
Characters call them "memories" and so we extrapolate based on what memories are to us. They're moments that we lived through in our lives and remember to varying degrees. We know that memories can be (or rather, usually are) faulty and that they heavily depend on our personal experience.
Pensieve memories aren't memories as much as 360 recordings of everything that happened around the character, up to a certain distance. They're completely objective, the same as watching a family film is, and they record everything around them with no bias.
That's the whole point of them, actually. That's what makes a pensieve such a powerful magical item. That's why Dumbledore goes back again and again to view his memories of Tom Riddle, to look for things he may have not noticed the first times he did this, exactly because of the "recording" quality of pensieves.
It's not a plot hole, it's just that you didn't understand how pensieve memories work.
