AccessibilityScrollModifier lets you place content in a scrollview when dynamic text hits certain sizes or by default an Accessibility Category size

AccessibilityScrollModifier.swift

struct AccessibilityScrollModifier: ViewModifier {
    
    @Environment(\.sizeCategory) private var sizeCategory
    
    var axis: Axis.Set
    
    var shouldScroll: (ContentSizeCategory) -> Bool
    
    func body(content: Content) -> some View {
        if shouldScroll(sizeCategory) {
            ScrollView(axis, showsIndicators: true) {
                content
            }
        } else {
            content
        }
    }
}

extension View {
    func accessibilityScrollView(axis: Axis.Set = .vertical) -> some View {
        self.modifier(AccessibilityScrollModifier(axis: axis, shouldScroll: { $0.isAccessibilityCategory }))
    }
    
    func accessibilityScrollView(axis: Axis.Set = .vertical, activateAt sizeCategory: ContentSizeCategory) -> some View {
        self.modifier(AccessibilityScrollModifier(axis: axis, shouldScroll: { $0 >= sizeCategory }))
    }
}