TowWhee ropes for kids

I was watching Pinkbike this morning and they mentioned a ‘TowWhee’ rope.
Now I’m sure there will be a chorus cry of ‘you can do the same with an scaffold pole, or some shite’ but I’m wondering if anyone has actually used one and whether it’s worth it, rather than persevering with taking climbs in small steps?

Little One is strong on the bike for her size but could do with some confidence after her big stack. I’m also considering getting her more into mtb with possible a proper kids mtb bike as she seems to genuinely love it, not sure yet.