We were very, very strict with ours when they were little, and both were challenging in their own way (DD1 is neurodiverse). Refuse to get dressed? Fine, you can go to school in your pyjamas and slippers. We did take clothes to school and she got changed in the car, but understanding that we would carry out our threat meant that she didn’t do it again. If we were out, and they played up in a restaurant, they were given one warning and were then taken home. I did shout a lot, but it was often the only thing that worked - please tidy your bedroom (no response), but yelling, please tidy your room now, meant that they did it, because they knew there were consequences for not doing it.
I never, ever, smacked them or used any form of physical violence, but made sure they knew that actions had consequences. I get that it wouldn’t work for all families, but gentle parenting wouldn’t have worked for us.
We did live in other European countries during their childhood, and I did find that toleration for badly behaved children was low. And expectations much higher - no nursery would take children if they weren’t toilet trained by 18 months, so we had to crack on and do it. Children at restaurants were expected to sit at the table and eat their food, not run around screaming.