You may at least want to take a look at vdirsyncer[0]. Assuming all of your sources run CalDAV that you can hit than you can at least extract the events. I use it for backup for a calendar of my own (so I don't know what I would use to "merge" multiple synced calendars into a singular view but maybe you could do that via a "master" account an write all the other events to it?)

[0]http://vdirsyncer.pimutils.org/en/stable/

and if rsync doesn't quite work for what you need/a target you want to use, rclone is always an option as well

https://rclone.org/

Yes, but, I have used rclone via Restic which encompasses more functionality I think. compression, deduplication, encryption etc.

Especially if you witness it as an employee and run it up the chain as far as possible and it gets ignored.

Having had good and bad in my career has saved me from realizing that this was happening and that I shouldn't sit idle but if I'm not idle and do something it becomes extremely disheartening to watch this happen (and then I leave when it becomes apparent that nothing will be done and I'm miserable under my manager)

In a company with these kind of problems, if you try to run it up the chain, it usually gets "captured" very early on from allied powers of the bad guy. In a healthy company with the right "antibodies" in places, a bad apple has more chances of being caught before it spoils the whole bunch.

Whatever is easier for you but (if you can) target what they write in

Disagree, I was the not in the "in crowd" with my boss at a previous location and yet I was the person (as suggested) in regards to everything backend related.

This is very true. I'd see this in software I worked on integrating ERPs where we'd have support for like 5-10 custom fields.

The best workflows were those were the custom fields were used and just had a nice label (e.g. "Old Customer Id") and not the workflows where some consultant had created an additional UI that didn't even use the underlying fields and did something like write the data to some unrelated storage mechanism and then building reports that are trying to awkwardly mix and match these data sources.

and also what you work on.

I've been through it working on released and unreleased projects and how things are handled changes based on that

I'd forgotten all about interop with DCOM until just now! Several years ago (when I last had to do it) I recall having to horribly mess with services on my local machine just to get anything to appear to work...let alone actually knowing if it did what I wanted (consistently) and then how to get that to work at a customer site (we were told to document it and throw it over the wall to support...)

See chapter 4 of this PDF for an idea of the amount of settings you need to change to make it work: https://www.kepware.com/getattachment/04042e47-c690-467c-a93...

I've also started experiencing that even though all actions are cleared and I can navigate away that sometimes those actions "didn't take" and I'd be cleaning up emails for the N-th time.

Generally what parent says and to add: Does the company have a good/stable/solid vision/strategy? Do you believe it is/can execute on it?