Google Analytics 3 / Universal Analytics is going away. The data can't be taken over to GA4 though. What's your way of doing with it, e.g. exporting PDFs or Excel, store it into BigQuery or similar, create a BI report on top of it or just ignore it?
Id say it's really up to you. Like someone else mentioned, they really made this transition difficult. For example, limiting the amount of conversion tracking you can have to 25 which forces you to use data layer tracking over anything else with fear you'll run out.
true, i think the new design saves them money (more efficient data model); and drives people into BigQuery which will eventually be paid. But i have to say that GA4+BigQuery gives a powerful combination.