Just to preface this, I am an academic with a full-time responsibility for student welfare, especially students with health or home issues, and so this is my bread and butter in many ways.
I think interruption is the best option. I don't know why it needs to be for two years... It can be for one, it might even be shorter than that (though this is unusual). Interruption is not necessarily discriminatory and can be (in fact it often is) the best option when health concerns like this arise. To be clear: asking for or recommending that a disabled student to defer for health reasons is not of itself an instance of discrimination. You'd have to show a lot more in order to demonstrate that. Interruptions because of health, family situation, cashflow problems etc are very, very common.
I don't know what your course is, or how it is taught, but it's not always 'reasonable' to move everything online for just one student. By law, the institution is required only to make 'reasonable' adjustments. What you and I think 'reasonable' and what is legally categorised as 'reasonable' are two separate things. Similarly, your paying for the course does not necessarily mean that the provider needs to make wholesale changes to the course if you have a heath condition affecting things.
I understand that you are upset, but there's a lot of accusation here which, frankly, does not seem to be seriously applicable. You are right that it is not your fault. It is not the fault of the institution, either. I'd ask them what reasonable accommodations they might be willing to make, and for a full breakdown of what their reasoning is when they recommend an interruption of studies. Then you will know what's what and if there is indeed an argument to be made against it. You might also benefit from a conversation with a Student Union case worker.