Sorry. Glad you realized they were wrong. Hard not taking it personally but I’ve learned not to.
It’s a rare occurrence but has happens often enough around fireworks, night shows and parades to recognize the pattern. I have learned to quickly dismiss and ignore when parents aggressively act out that their kids take priority over anybody who is not a child.
It’s happened with 6 inches of clearance (4 of us standing at the Epcot lagoon rail and the parents send their kids to stand on top of our feet). Happened with zero clearance (parents send their kids to climb and sit on the railing/wall in front of us). I’ve had strollers jammed at us to move and nasty comments made. I’ve questioned parents who repeatedly bumped and lightly kicked us and was told it was because I was moving.
We’ve had a parent send their 2 kids up to the front line of MK parade to sit on my husband’s
ECV - with him on it!

No joke. When I turned around to the mom and pointed out her kids - she shrugged. Seriously? C’mon now. It’s not all the kids’ fault but I no longer have any qualms telling them to go back to their parents. And then put the family on ignore.
People get tired, maybe stressed, or are inexperienced, etc. But if you’re aggressively trying to ‘get your way’? Prepare to be 100% ignored.
My kids were important too. It was financially hard the few times we took them WDW back then. I understand the stress of trying to make a trip great for them. When the night show view was important we prioritized arriving early enough for them to get a decent view.