I think you've been hit with what I call the "hidden agenda" fallacy, which is something many people seem to commit routinely (or almost non-stop on reddit). It's closely related to (and involves) the Strawman fallacy, but includes some specific flawed reasoning. It basically goes like this:

1. Read the argument

2. Disregard argument and instead try to read the person's mind or guess "what they really meant" to uncover some hidden agenda that you think must exist since it's simply not possible that somebody has a good argument against your pre-supposed belief.

3. Attack what you think they must actually believe rather than what they actually said.

You can also gas it up with some emotion too, especially if it's something deeply enmeshed in your identity like religion, politics, or Apple.