Do you even know what it is you're 'judging', Gwenhwyfar? What the basis of that is? If you take the comment in its simplest form - "I judge parents who put their children on reins", which is what several posters say - what are you actually judging there? That a child whom you presume to know is 'too old' to be on reins? Is that it?
So, assuming that you have a functioning brain in your head (even if you don't have care for other people), would your little grey cells not take your assessment further as to ask yourself why that may be? Surely, if an older child is wearing reins there's a reason. Is it a) some sort fashion statement, or b) the parent is secretly yearning to have a dog but must make do or c) there must be a reason centred on the child and, if that isn't something that you would reason the average child would want to be wearing, there must be another reason. What could it be?
If you are a parent yourself you would know that your concern would first and foremost be for the care and safety of your child so, if you've managed to discount the fatuous reasons above you will have arrived at the eminently sensible solution of 'safety of the child'. That is your answer, your synapses have done their stuff.
So what is there to 'judge' exactly? Even if you need a pen and paper because mental gymnastics isn't quite your bag then why would you think that making such a statement as "I judge blah di blah" would ever be something to blurt out? I mean, people might think you were a bit of an idiot, mightn't they?
For your info - and to pre-empt your undoubted response of "Don't mention children in reins", that logic process will apply to 'children in buggies' or 'people using lifts' or 'people wearing head-covering scarves' or 'people in turbans not wearing helmets' or even 'fat people eating McDonalds'. Pretty much anything really. There are reasons that people have for doing what they do. They are generally good reasons, or even the best in their personal situations - but either way, none of our business.
Idly musing is a world apart from sharing your thoughts online but I'll ask you. What do you personally Gwenhwyfar, get out of making judgements of people? Sharing these online? Is it because you need to belong to a tribe of like-minded people? Or that you're affected by judgement yourself so that you need to lash out at somebody else yourself? I know quite a few people who do this - they've been hurt so they need to pass that on.
You've said that you're not a troll so I'm assuming that you get some feeling of camaraderie from posting on here, as I do. The way you've said you want to post, ie. saying exactly what you like about other people isn't going to work. If you genuinely do not want to upset other posters then think about how you'd feel if you were in need of support and try to see if your proposed post would whip that support away from you?
In case you were wondering, yes, I'm countering all of your arguments, taking away every 'loophole' - and what you'll be left with, if you carry on - is that you'd be trolling.