The 50K Limit for Calendar Entries: Big Problem

I have a shared calendar with my family in which we keep all our events, tracking what we do each day. It's a wonderful and efficient way to go back years to see what we did at any given time in our shared history.

That calendar now has over 50,000 items in it (using this technique to suss out how many events there are, about 50,385 currently) and so we have now reached its hard limit. We subscribe to iCloud+ providing tons of storage (1. 3 TB available). The size of the calendar seems to be about 20 MB (far under the 1 GB limit). Yet the 50K now prevents us from adding any more entries.

Are we supposed to now delete our digital history just to make room for upcoming events?

The 50,000 item limit for calendars, reminders, and events has been the same for as long as I can remember (at least 10 years).

I know one response is, Why so many entries? You must have loads of repeating events with no end date, but that's not the case. The issue is my family records practically every event in our shared calendar for the past 20 years. That's just under 7 events per day on average. Maybe that's a lot for most people but over a long enough period of time, things like Zoom meetings that repeat and the multiple activities on any given day easily mount up, especially with multiple people on the same calendar.

So, what to do about the "...insufficient storage space..." issue?

Suggestions (other than to delete our shared history)?