I dont think you’re understanding what I’m talking about, or you’re ignoring it on purpose.
An example of something within HA that will break REGARDLESS OF UPDATES, is the Yr platform and integration for Weather Data (The link doesn’t work because it was removed from HA as requested by yr.no, The Norwegian Meteorological Institute). You can find some details about that here and here but there is more info all over the forum and GitHub.
This basic (And some would argue a core) service of HA was REMOVED. Later, replacement platforms like this popped up, that required manual addition. This is not the only example of a service that disappears, goes EOL or is gets updated, depreciated, etc.
My point stands, that regardless what direction you take, “Eventually SOMETHING will break, eventually, in either case”.
As I have said clearly in this thread before, I don’t think ANYONE is using a 100% sandboxed, no external service, installation of HA. It reaches out the internet for SOMETHING, some API or service, that will EVENTUALLY BE DEPRECIATED.
You can ignore my point as much as you like, and pass it off as “well you may want to eliminate that”, but we both/all know it is what it is.
Anyway, I’ve made my point, I’m just being crystal clear about it.
If you don’t update, EVENTUALLY something will break, unless you are 100% isolated from all services. It might not be today or tommorow, but eventually.