CVS is dead technology but we still lose precious releng time in making sure versions are changed so it's updated clean from previous release, useless bits are still built on every patch review, tests are not run and so on. All that for nothing as we don't know whether there is any user left and whether the plugin is even still functional.
With all that said, Eclipse TLP PMC is planning to have 4.22/2021-12 release be the last one containing CVS support . It's a standalone feature not included in Eclipse SDK nor in any EPP (AFAIK) thus it shouldn't affect many people (if anyone!). Being standalone, building it separately should be easy in case anyone is willing to preserve it.
If you're still using CVS and depend on this plugin availability please raise your voice now and contact us on platform-dev@xxxxxxxxxxx
to plan and organize the split of CVS feature and you taking over release duties for it.
Red Hat Eclipse Team