I was worried a bunch about this as my kids got into the sporting ages. But I've been rally pleasantly surprised. Maybe it's our particular town (Boston adjacent), but all the parents seem have things in perspective. Well, maybe not _all_ but by far the majority.
fwiw, I know it's the right thing to run tests from a different computer. But it's more annoying. And I hereby tell you that 90% of the time it probably doesn't matter.
Definitely times it isn't true. But if you're not doing a load test bc it's a pita, do it locally. Most of the time I've wanted to do this, all the action is inside the app. Just be careful to acknowledge that there could be limitations / surprises.