I won’t disagree on that and do see your point, 100% context for sure
We do have more context than it seems though, if someone tells me to show up to work at 7, I can assume it’s a.m. If someone says they’ll meet me at 12, it’s going to be mid-day etc. If it’s 7 and bright outside it’s in the am, if it’s 7 and dark it’s p.m. It’s not too tricky with context clues
But, being my own devil’s advocate, you are right. No ambiguity in 24 hour time. I don’t have an issue with 24 hour time, was raised on 12 hour so it’s natural but 24 isn’t bad either, and is more exact in some ways.
I do prefer 12 hours though, makes the day feel shorter like working two 4 hour shifts instead of a solid 8. Same time but one feels shorter so I apply that to most days. As another mentioned, working a 9-5 seems short when compared to working a 9-17 😂
If it were up to me though, A.M and P.M would be visible on every 12 hour clock, I do agree it’s weird that some are made without it, sure it is easy to figure out whether a.m or p.m via context clues but having any ambiguity in a form of measurement seems odd, but making a dinner date for 7 and showing up at 7 a.m would be odd as well I guess, though not everything is so clear.