No, the internet is just saving our time and it is up to us how we utilize that extra time. If you are getting lazy it is because you don't care about your health. It is similar to whether we should use car or walk because cars are making us lazy but people who are smart will spend one hour in the gym to get even better health than six hours of walking.

Changes are happening because of evolution of internet everywhere and not just in buying and selling habits. For example, my bank removes need of papers for availing services from them and I am able to availability of corona vaccine in my town and everything. But, criticizing easy availability of internet for other human errors, may not be a right thing to do.