What they're doing is essentially a technical demo. It's not necessarily practical. It's more "look what I can do!" Which is great. I do it a lot myself. I have no doubt that my 540 kicks are impractical. However, I do them, because they're fun and I can show them off.
There are two ways this can become problematic. First, if the practitioners think this is directly applicable to a real fight, they're probably going to get punched or swept. But, if they correctly identify this as a demonstration of balance, flexibility, and control, then there isn't a problem. (It's also why I'm so harsh on people who claim the forms teach you how to fight).
The second is if the audience thinks this is how they would actually fight, and then criticizes them for it. If the audience doesn't realize what this is, and accept it as what it is, then the audience can be unduly mean towards the performance. Just like when you have kids doing a bo staff form for a school talent show, and 90% of the comments are "lol but it won't work in a real fight, they're just baton twirling."
What I will say is the biggest grievance for me is the form. They have the rhythm of dice. None of them are in time with each other. I'd rather see them do whatever their Basic Form #1 is, and do it together, than see the most intricate form in the world where they're all out of sync.