WordPress Revamp for Personal Website

I have a personal website on WordPress, hosted at IONOS. I wanted to improve its design, so I hired a developer to update it. Instead of modifying the WordPress site, that developer rebuilt the entire project from scratch as a React and Node.js application and deployed it on Vercel... (Budget: $30 - $250 USD, Jobs: CSS, HTML, PHP, Web Design, Website Design, Website Development, WordPress, WordPress Design)