I assume it would break into smaller particles similar to the formation of microplastics. I hear about the effects of microplastics all the time. Are the effects of disposed rubber on the environment studied as extensively?
You have OCD and are on the autism spectrum. Your mom is kind of narcissist, set strong boundaries with her. You're strong enough to live on your own. Don't stop educating yourself. You can handle graduate school.
YT just recommended this to me, and it's honestly the first time I think I've ever heard it before. It's now in my playlist for relaxing at the end of the day.