Not doubting anyone's personal experience, but to add another anecdotal data point:
Kids weren't as disruptive to sleep as I expected after reading horror stories online. The way the internet talks about child raising sometimes makes it feel like martyrdom, but the internet tends to focus on worst-case stories and people venting about uniquely bad situations. It's almost taboo to share positive stories when other parents are sharing their struggles, so most conversations veer toward discussions from parents who are struggling the most while other parents keep quiet. I've found it helpful to identify parents who are doing well and specifically ask them what they're doing, because most parents are too polite to tell others how to raise their kids.
There are always edge cases and every child is different, so of course we should all be considerate of other parents and cut them slack and/or provide assistance when they are struggling.
However, I and most of my friends have had good results with combinations of sleep training and adjusting our own sleep schedules for additional buffer. The key for me was to go to bed an hour earlier than normal. If I get interrupted in the middle of the night, I use that extra hour to sleep in. If I don't get interrupted (most common case) I simply wake up an hour earlier than normal. It doesn't cover every night and every situation, but it fits most nights.