Really, I am not sure what the big deal is.
I don't like dogmatism masquerading as truth seeking 
?
"Show me how you read and I will tell you who you are."
The search for truth will always be done within a dogmatic and ideological framework. The first step to getting serious about thinking is knowing and attempting the impossible task of making clear such dogmatics and ideology within the text and one's own reading of it, if I can suggest that faulty ideological dichotomy.
The task of thinking will never be the end of dogma or ideology but rather opening the space and room to find the possibility for a more appropriate dogma and ideology and articulating the dogma and ideology at work.
Lest we fall in post-dogmatic and or post-ideology times. When people believe that we have achieved such a time (people do) or that it is possible (people do), the is exactly when dogma and ideology have found their perfection.
To be able to critique dogma and ideology one must first love them intimately and well. For like any in love affair, the greatest threat to beloved is from the lover. Ideology and dogma never want to be loved, rather merely propagated through mindless intercourse.
So just like people, the worst possible thing you can do dogma and ideology, is to love it. There is no greater gift (think of the modern German here of both
Gift and
gibt) you can offer.
And in this modest task, really there is no better place for most people in our time to begin than with Descartes' wonderful text.