The contractual relationship of GIG economy workers is transient, transactional and fragile. What is its impact on social security of the tech enabled gig economy workers and their performance .
I think the answer to this question depends on the country of reference. In general Social Security is a governmental program of forced saving upon the workers. However, there are differences from country to country, In the US a certain amount of money is withheld from the working population and used to create a social fund to provide a monthly payment to those retired, How much the retirees receive depends on different factors but mainly how much they contributed to the social Security Fund. Back to your question for the US it does not matter whether the contributions to the Social Security Fund come from permanent and secure jobs or from jobs such as those of the tech enabled gig economy as you said. The ideal world for countries is to promote permanent secure jobs as those will lead to better societies.
This is another big question, why the world moves away from the first best optimal solution of permanent employment and rapidly moves to a variety types of new employment that are characterized by job insecurity.