You will only have to use water in EXTREME situations like those in the picture you showed. 99% of the time I use no water but if I were a farmer cleaning my tractor with it I'd use water more often. The product does not seal in the dirt, it lubricates it away from the surface without scratching and leaves everything perfectly clean except for the cloth you use of course.
It seems you're suspicious when products have bad reviews and suspicious when they have too many good reviews.
So when a product comes out which is a great product and is widely accepted as being so by a large number of people, you'll avoid that product because you believe too many good reviews are a sign of something dodgy going on? I believe that's taking cynicism a tad too far.
The only comment I can make about the reviews on the Ideal World site are that there are plenty of negative
reviews posted on various other products so there's no way the company are selecting only the positive reviews and unlikely that the reviews for this product are dubious. Also, they offer a money back guarantee so they'd hardly be selling a product for years that people kept on returning because it failed to work as promised.
Anyway, I was sceptical at first but unlike you I've actually been using the product for several years now so I have first hand experience to go on. Now that's more important than any number of reviews.
I really don't know why you don't just buy some and try it, then comment on something you've actually used. It's not like it's expensive is it? I mean you haven't really got much to lose have you. I use it all over the home now - it's great on any hard surfaces including glass and stainless steel, of which our kitchen has quite a lot. It's by far the best cleaner I've used for such surfaces as it's virtually effortless to use, removes grease etc. and doesn't scratch anything. It also seems to keep those pesky fingerprints off the stainless steel fridge door for ages and for that it's worth it's weight in gold.
Anyway since I very sadly don't own shares in the company and this is a thread about the drought, I'll make this my last post on the subject and wish you happy cleaning whatever you decide.