I'm also interested in this. What will happen in July when Google stop processing date on the old Universal GA properties?
It says in their message (on the top of GA currently):
On 1 July 2023, this property will stop processing data. Starting in March 2023, for continued website measurement, you should create a new Google Analytics 4 (GA4) property, or one will be created for you based on your original property and reusing existing site tags.
So maybe this will be ok? Will it still work with itch?