Right. The so-called bubble zones near abortion clinics are actually pretty small, and don’t prevent the patient from seeing and hearing the protesters. For the most part, the laws simply prevent the protesters from getting right up in the face of the patients.
For example, in Madsen v. Women’s Health Center, a 1994 Supreme Court case, the Florida law under consideration prohibited protests within 36 feet of a clinic, and also prohibited loud noises within earshot of the clinic and images that could be seen from the clinic. It also prohibited protesters from approaching patients within 300 of the clinic. The Supreme Court upheld the 36-foot rule, and the loud noises rule, but struck down the displaying images rule and the 300-foot rule.
In 1997, the Supreme Court ruled against a New York law providing a 15-foot moving bubble around patients going to and from abortion clinics, but upheld the part of the law that adopted a 15-foot fixed bubble around the clinic itself. The court opposed the moving bubble on the grounds of difficult enforcement, and on the grounds that it interfered too much with rights of peaceful protest on public property.
When the Supreme Court did uphold a floating buffer zone, in Hill v. Colorado, it was only to prevent protesters from coming within 8 feet of a patient when the patient is within 100 feet of a clinic. So it’s not exactly a law that prevents abortion patients from hearing the anti-abortion message. In fact, it’s main purpose was to prevent physical obstruction of access to the clinic.
Hill v. Colorado was a 6-3 decision, and the dissenters in that case included justices from both sides of the political spectrum, with Scalia and Thomas, but also Kennedy opposing the ruling.
(The First Amendment Center has a short summary of these cases.)
So the whole abortion clinic example is, i think, a bad one for this case, because while the Court has found that certain limitations on speech can be applied to protests at abortion clinics, none of those limitations are so strict as to actually prevent the people who enter and leave the clinic from hearing or seeing the anti-abortion message.
Not one of the abortion cases prohibits protesters from standing hundreds of feet away and peacefully holding up signs, which is what the Westboro group was doing in their protest of the Snyder funeral. As has already been discussed, the protesters were so far away that Snyder’s father never even saw or heard them on the day of the funeral.