If you can try (in person), is to ask them why they are acting like that to their own son / daughter because you didn't take the vaccine. Ask them "Why are you not respecting my own choices?" "Why would you alienate your own son / daughter?" Or tell them in such a way to put them in their place that their actions are more damaging because they let their politics dictate who to love. etc.
If nothing avails, it is their own fault.
I was in Texas on April 22 to the 28th, San Antonio. It was rainy / misty when we got there, got sun in Port Aransas. Then rainy again when we drove back to San Antonio lol.