WidgetKit: Can I replace one widget kind with two widget kinds widget bundle after AppStore submission?

Question

I was watching Apple's WWDC video "Principles of great widgets" and from 22:13 min-23:53 min, there's a part about widget kinds and the engineer says this:

The next axis for personalization is the widget kind. Kinds of widgets offer different perspectives into your data or content. So think about what kinds of widgets might make the most sense in your app. The best way to describe these is really by example. Here’s an example from Clock. On the left, we have a City widget that tracks the time of a single city, and on the right, a World Clock widget that can accommodate many different cities in the same view. Here’s another example from Stocks. On the left, there’s a stock Symbol widget that shows the stock price for a given stock-- in this case, Apple-- and on the right, an Overview widget. The Overview widget will show a series of stocks reflected in the user’s Stocks app. So how do you publish these different kinds of widgets? Well, to publish multiple kinds of widgets is super trivial.

Using that Stocks example from before, here I have a Symbol widget and an Overview widget in the top left. To publish these, you just return the different widget configurations in a WidgetBundle object and include the @main attribute to the WidgetBundle. It’s that easy. Note that the order that widgets are defined in the bundle is also very important. This order reflects how your widgets will appear in the widget gallery. So make sure that the first widget listed is your hero use case.
Lastly, it’s not possible to dynamically publish or dynamically retract the availability of a widget once your app is installed. So some care and thought should be applied around the support of your widgets over time.

I have not yet submitted my app to the AppStore, and I plan to submit it with just one Widget kind, and later update the app and replace this one widget kind with WidgetBundle with two Widget kinds.

What does "it’s not possible to dynamically publish or dynamically retract the availability of a widget once your app is installed" mean?
Does it mean I won't be able to replace my current 1 widget kind with widget bundle with 2 widget kinds after AppStore submission?