This is just a proposed rule that was posted on federal register on 10/10 for public comments. DHS has to go thru those comment, tackle lawsuits (which is very likely) and then draft a final rule. SNAP, CHIP, medicaid, housing benefits etc are mentioned in proposed rule that will count as a public charge.
People who are currently using them shouldn't worry about it at all , at least for now coz the rule clearly says it won't affect individuals who used it before the effective date of the final rule. Once it's final, you can think abt it. Coz the final rule will have lots of things changed. So don't panic for now. Also, it's gonna take abt 5 more months for the rule to be finalized.