It’s not all about wheelchairs - chronic pain, neurodiversity, and mental health are all relevant too, and learning to talk with clients about what they need and how they experience pleasure is essential.
Consent is conditional by design, it requires specific circumstances and/or conditions to be maintained continuously. The introduction of money or some material good as a requisite condition does not negate this basic fact.
Sex work as a sociopolitical issue is used as a scapegoat to avoid addressing larger issues like poverty and violence against femmes. Sex work is not the problem and trying to make it disappear makes the problems worse.