Here's my opinion: ## React * Learning curve with many libraries; * Fragmented ecosystem; * Frequent updates and API changes; * JSX is confusing for some.

Here's my opinion: ## React * Learning curve with many libraries; * Fragmented ecosystem; * Frequent updates and API changes; * JSX is confusing for some. ## Vue * Scalability challenges in larger projects; * Incomplete documentation in advanced topics; * Complex state management (Vuex) in larger projects; * Fragmentation in the use of Composition API and Options API ## Angular * Steep learning curve; * Verbosity and weight; * Updates with breaking changes; * High boilerplate. ## Ember * Smaller community; * Complex learning curve; * Lower performance; * Inflexibility; * Closed ecosystem. ## Svelte * It's perfect and anyone who says otherwise is a blasphemer.