Re: When a pious person died they make a place of worship at his grave
The verse was revealed concerning martyrs but the principle remains the same for all those upon whom there is reward from Allah Most Merciful for what they strived for in life. The Awliya especially so
Do not call them dead [2:154]
and
Do not think of them as dead [3:169]
The reason for revelation was that the hypocrites were saying Fighting in the way of Allah gets you killed and dead.
What are you saying again, that everyone else is dead dead? That is similar to their beliefs actually, the hypocrites.