Direct replacement for Cyanogen would be Lineage. There are dozens of decent ROMs to try though.
I still opted for iOS in the end. As much shit as Apple pulls, they did 6 year software updates when only flagship Androids got 3 and they aren’t generally trying to dominate the Internet.
Nobody outside a select few know the real dirt inside the proprietary code that Apple puts out. Open source is the only truth that you can see for yourself. Apple is the antithesis of open source.
Open source is only as useful as the contributors and reviewers. Finding things after the fact helps noone.
People need to stop revering open source as the solution to humanity’s problems and treat it as a useful tool, nothing more.