How do I bypass the EA App and access Origin to play games.

You can still use Origin client. Some are saying you can re-install it after you've installed the EA app so, then you'd have both.

I guess they're doing this cuz some games need the EA apps background service to work properly.

So, if you want Origin client still, just re-download it.....you can get it from multiple places....or;

https://www.techspot.com/downloads/5783-origin.html

Stop origin client loading EA app message;

1. Open C:\ProgramData\Origin\local.xml in notepad
2. Add new key there:

<Setting key="MigrationDisabled" type="1" value="true" />

This should go at bottom just above the last line which is "</Settings>."

Save the file and exit. Now launch Origin and that stupid notice will be gone.
Congrats...you can now play your games properly.