It's not a universal truth that you can just choose to get a vaccination without making an appointment or needing to involve insurance etc.
In a hypothetical extreme scenario, imagine having to weigh the risks between getting the vaccine that will potentially save your life and unexpectedly getting an appointment reminder text/email or follow-up contact that alerts the controlling partner and they potentially end your life for the "transgression."
The vaccine being "cheap" is also not universal and if you aren't allowed personal discretionary spending anything >$0 isn't cheap enough.
I agree with your overall arguments and your position, just not the way you have portrayed it.
All reads like blaming the victim or not acknowledging that there can be barriers you possibly haven't even considered between a desire to act and an ability to. The goal absolutely should be about making personal decisions even in the face of adversity, but when you reduce it like it's just them being lazy, and not recognizing the full extent of their reality, it doesn't come across as empowering. Maybe decisions are also being made with consideration of their children and their needs which also affects the calculus in making otherwise personal choices.