If you’re still interested by the time you decide if you’re going for a higher education, then no, Wix or Weebly should not at all concern you about a future in web design/development. It’s important to note that Wix and Weebly are more related to design than development, you aren’t really developing anything in them as such.
MY FACEBOOK PROFILEI am the master of HTML, CSS and Javascript. I know everything needed to make a website function, efficient. I didn't stop with the web. I went beyond with most popular Javascript framework called Vue JS. I even know the deployment, server and security. I will give you 100% web solution.
They didn't offer me a job. But I made myself as a remove web developer. I made their website and showed it to them. They liked it. And uploaded the content. It was fun working at Programming Hero.