Agree. I read this book without having any clue about finances and it definitely reshaped my view on work, money and assets.
I also remember him writing that he encourages you to have a job and try different careers to acquire a diverse set of skills. The message that I took home is that you should not sell yourself completely to the benefits of your employer, but have a side business running (e.g. investing, slowly building your own brand/company/product) which increases the chances of you acquiring long-term wealth and financial independency.
I don't think you can blame Kiyosaki on speaking the truth on the financial system as he leaves the moral implications of you having acquired a good amount of wealth on other people's back completely out and it will finally be up to the rich individual what to do with all his earnings.
Interestingly, I also had the thought that if everyone starts to be a full-time investor and speculator and "fuck other people over", then there'll be no one left to do the work. However, I don't believe that this will ever be the case because as @kyriacos wrote you need a good share of luck, and/or be extremely dedicated to get rich which most people won't achieve. And as long as you don't, you'll have to work for those that do. A pyramid indeed.
I'm interested in what you envision as an alternative to this? Please don't say Love and Peace :-)