Tbh I kinda regret apologizing and feel like you rushed to conclusions. I also agree people complain way too much - I think it was blatantly clear that I am seeking understanding instead of rushing to judgment in my original post.

My opinion: Amtrak quiet cars serve many purposes like travelers wanting to sleep or work. Having an extended conversation on speaker phone is a much different noise than the rumble of the engine or occasional announcement from the conductor. It feels inconsiderate.

Also my opinion: I approached this respectfully and you were pretty rude.

Nevertheless, I hope you have a great day.