The LTS, long support version and stuff are all confessions of a technical and organisational failures
If you are not able to upgrade your stuff every 2 to 3 years, then you will not be able to upgrade your stuff after 5, 10 or 15 years. After so long time, that untouched pill of cruft will be considered as legacy, built by people gone long ago. It will be a massive project, an entire rebuild/refactor/migration of whatever you have.
"If you do not know how to do planned maintenance, then you will learn with incidents"
If you are not able to upgrade your stuff every 2 to 3 years, then you will not be able to upgrade your stuff after 5, 10 or 15 years. After so long time, that untouched pill of cruft will be considered as legacy, built by people gone long ago. It will be a massive project, an entire rebuild/refactor/migration of whatever you have.
"If you do not know how to do planned maintenance, then you will learn with incidents"