There are non-FOSS alternatives to Unity. For tinkerers, sure, it doesn't matter. But if you plan on releasing a product, the licensing of your engine starts to matter a lot more. The question should really be, is there trust left in Unity? Even using a less powerful or more expensive engine, might be a better option across your product lifetime, depending on the licensing terms or them being changed retroactively (that really should be fucking illegal, but oh well).