Wasn't one of the EU's antitrust actions against google aimed at the preventing punitive measures google was employing against OEMs that tried to fork Android by threatening to pull their access to the google play store?

That's far more specific than anything the EU ever ruled.

https://en.wikipedia.org/wiki/European_Union_vs._Google#EU's_investigation

There's nothing like that in anything I read. It was more about giving Android users a choice of default search and browser (similar to US & EU vs. Microsoft decades ago when MSFT made Internet Explorer and Windows Media Player default on the OS). Otherwise you would hear about Amazon getting giddy