Honestly, I do believe that anyone who thinks critically is a philosopher. That's all it takes. Now it takes more to be an EFFECTIVE philosopher it takes a bit of craftsmanship.
It sounds sensible on the surface, but it is based on the assumption that it is possible for humans to observe and objective non-negotiable truth
True, one can't be truly not objective. But FEW philosophers, if ANY are. Decartes, one of the more well known philosophers completely based his philosophy on the fact God leads us all the correct knowledge because god is benevolent. (for those of you who don't know, Decartes is credited with the "I think therefore I am" quote). That's not objective. That's not even anything that can be observed scientficially. But no one would argue he was a philosopher. His "truth" is quite negotiable. Try telling it to an atheist. You'll get disbelief.
And as such we cannot touch on eternal truths and possess the objective insight you seem to say that philosophers display.
I don't believe we can truly feel the eternal truths, but we can think critically. Possibly come close. Get some sort of insight to it. Thus, making us think philosophically. Think ABOUT the higher truths, and the ever ending question of "why".
Now you could say that everybody who thinks deeply does that, but if they don't have penetration of any sort, such as most, if not all, people here, then you do not engage in the ideological construction of society.
Everyone engages in the ideological construction of society, now wether or not you seek to influence change into it, is another story. Don't believe me? Take a look the the concept of family, which seems to change as people mindsets evolve. That is an aspect of the construction of ideological society. We all influence it, we all change it, or support the status quo.
Also if you look back through the ages then one thing unites all the people known for deep insight, specifically a high degree of academic learning.
That's true with the impacting philosophers. But, we aren't talking about impacting one. Everyone can be it. You don't need it, but to really have impact it REALLY helps.