Of course, if you have outstanding debt, I agree that it must be the first priority to pay it off, and it's not good to take more debt.
I think we have the same opinion on this particular point. I read through the Op thread and there are valid points that need to be practiced to keep someone wealthy. Although doing these practices is not a guarantee but it will at least justify that you do the right things that should be done. However, the point that talk about buying expensive things is not convincing to me. Buying expensive things is never a problem and can not be avoided some time. What matters here is the purpose you're buying the expensive things for. Buying expensive things that are useful to you or that would probably bring in more income is a very necessary thing to do. At times, it may seem like show off to people but that should not stop one from buying expensive things when they actually need it to improve themselves.
On the other hand, debt is a disease that slow down progress. When someone becomes comfortable with debt, they hardly succeed because when you take a step forward, debt will pull you back one step. I understand that we can not entirely do away from debt due to circumstances some time but it is advisable to clear them if you can and if you can avoid it by any means, don't hesitate to avoid it.