add_action(
    'wp_enqueue_scripts',
    function() {
        global $wp_styles;
        foreach ( $wp_styles->queue as $handle ) {
            if ( str_starts_with( $handle, 'wc-blocks' ) ) {
                wp_deregister_style( $handle );
                wp_dequeue_style( $handle );
            }
        }
    },
    999
);



or

function disable_wp_blocks() {
    $wstyles = array(
        'wp-block-library',
        'wc-blocks-style',
        'wc-blocks-style-active-filters',
        'wc-blocks-style-add-to-cart-form',
        'wc-blocks-packages-style',
        'wc-blocks-style-all-products',
        'wc-blocks-style-all-reviews',
        'wc-blocks-style-attribute-filter',
        'wc-blocks-style-breadcrumbs',
        'wc-blocks-style-catalog-sorting',
        'wc-blocks-style-customer-account',
        'wc-blocks-style-featured-category',
        'wc-blocks-style-featured-product',
        'wc-blocks-style-mini-cart',
        'wc-blocks-style-price-filter',
        'wc-blocks-style-product-add-to-cart',
        'wc-blocks-style-product-button',
        'wc-blocks-style-product-categories',
        'wc-blocks-style-product-image',
        'wc-blocks-style-product-image-gallery',
        'wc-blocks-style-product-query',
        'wc-blocks-style-product-results-count',
        'wc-blocks-style-product-reviews',
        'wc-blocks-style-product-sale-badge',
        'wc-blocks-style-product-search',
        'wc-blocks-style-product-sku',
        'wc-blocks-style-product-stock-indicator',
        'wc-blocks-style-product-summary',
        'wc-blocks-style-product-title',
        'wc-blocks-style-rating-filter',
        'wc-blocks-style-reviews-by-category',
        'wc-blocks-style-reviews-by-product',
        'wc-blocks-style-product-details',
        'wc-blocks-style-single-product',
        'wc-blocks-style-stock-filter',
        'wc-blocks-style-cart',
        'wc-blocks-style-checkout',
        'wc-blocks-style-mini-cart-contents',
        'classic-theme-styles-inline'
    );

    foreach ( $wstyles as $wstyle ) {
        wp_deregister_style( $wstyle );
    }

    $wscripts = array(
        'wc-blocks-middleware',
        'wc-blocks-data-store'
    );

    foreach ( $wscripts as $wscript ) {
        wp_deregister_script( $wscript );  
    }
}

add_action( 'init', 'disable_wp_blocks', 100 );