Can dyspraxia cause a person to have intrusive thoughts and memories over things that even they find trivial in nature?

Of course, the best person to answer that is the person's medical provider. A person with dyspraxia can have a number of psychological, emotional, and behavioral disturbances. It is possible that intrusive thoughts and memories over things that they may find trivial in nature may be a sign of dyspraxis, but without being seen by a professional, it is difficult to say if dyspraxia is the cause of these intrusive thoughts.