Can multiclass characters gain Epic Boons

Are Epic Boons only available to players that take one class to 19 or could a multiclass character attain them without a DM giving it to them?

There has been some debate about this. In my case, I agree with the following interpretation:

Quote from Plaguescarred >>

No official ruling besides what the core rules say. Main key points why such multiclassed character can take an Epic Feat is;

• The Epic Boon Feat Prerequisite: Level 19+ is your total character level, not your level in a particular class.
• If you’re instructed to choose a feat and no category is specified, you can choose from any category. 

The threads I remember about this topic:

-  Epic Boon Eligibility confusion (the previous quote is from here)
- 2024 Epic Boons
- A question regarding the Epic Boon Feats