well, he would say that wouldn`t he, he`s not really a big user of new technology.
Although he does use samplers, so that`s not entirely analog.

If you only wish to make acid techno, I guess, using nothing but analog might be fun for a while, but I couldn`t cope with it any more. I worked in a 100% analog studio for 4 years and as much as I loved it, I`ll never go back to that.
We have moved on and the sonic manipulation possibilities of a modern studio with a creative mind are truly unlimited. But it is nice to just piss around with some hands on now and again.

Was all the old skool acid techno made on entirely analog kit? Well, I know they used digital kit as well, but they did use all hardware back then.
When it comes down to versatility and going for high production values, it`s very difficult to achieve with purely analog kit.