The word that is used is "venerated":
From en.wikipedia.org; Veneration is a religious symbolic act giving honor to someone by honoring an image of that person, particularly applied to saints.
By "venerating" St. Paul's tomb, they are honoring him, not worshipping him.
That merely means that the 'presence of God' will not be there.
1 Corinthians 1:29, "That no flesh should glory in his presence."
If you're OK with that, then never mind.