Why We Replaced React 19 with jQuery 4.0 and Cut Frontend Complexity by 60% at Our Startup

When we founded our B2B SaaS startup 18 months ago, we followed every frontend best practice: we picked React 19 (then in early release) for its cutting-edge server components, concurrent rendering, and robust ecosystem. We hired three senior React devs, set up a complex build pipeline with Vite, TypeScript, Redux Toolkit, and React Query, and shipped our MVP in 4 months. But by month 12, we were drowning in complexity we didn’t need.

The Hidden Cost of Trendy Tech

Our app is a simple CRUD tool for small logistics firms: it lets users track shipments, generate invoices, and manage driver schedules. We didn’t need server-side rendering, we didn’t need concurrent data fetching, and we certainly didn’t need a 12-step onboarding process for new frontend devs.…