These threads are always full of posters apparently incredulous at 6pm bedtimes 🙄
So far we've had phrases like "I don't recognise this" and, "I wouldn't be dictated to like that", as if the toddler is doing it on purpose to piss their parents off.
Really, people have a positive bias towards their own experiences of raising a child and will give "advice" about things they think they made a conscious decision about, when really it's just the luck of their child's personality/temperament etc.
So they'll say things like "I'd just take him round with a bag of toys and he can go to bed at 8:30 when we get home", because that's what worked for them. They make it out to be some kind of parenting decision they made rather than they happened to have a child who's body clock had them ready for bed at 8:30.
You could no more take that child, put them to bed in a dark room at 6 and expect them to sleep, than you could take my son and somehow force him to stay awake til 8:30 just to enjoy the company of other people.
Of course there are ways around it now and again. If we need a bit of extra time in the evening to do a social thing with our son we'll factor in a little half hour nap in the car. But he'll still be hanging by a thread by 7pm at the latest. We stay over at friends' houses and he sleeps in a travel cot. We go to various events and he just falls asleep in the buggy/carrier/in our arms on the train/in the car. We don't miss out on life because of his routine.
But for the most part it's dinner at 4, bed at 6, and a blissful evening to ourselves. Some kids need that rigid consistency most of the time. I have a lot of friends with kids between 2 and 3 who are on their knees with late bedtimes and dream of their child going to bed at 6pm.