Getting knocked down for a bus, getting cancer, those sort of things self employed people should have been prepared for
This is a shitty attitude.
There is no reason why employed people shouldn't also have "been prepared" for loss of job or long term sickness etc. People are struggling in general to make ends meet and are forced to prioritise other things over preparing for when shit happens. There is absolutely no logical reason why the government should not extend assistance to SE people who will be just as much in need as the next person.
I have also lost 95% of my income in the matter of a week. I have never had any help from anyone in all my years of self-employment. Self-employed people cover their own sick pay, maternity pay, holiday pay, pensions, periods of unemployment etc. Only now they may need help like everyone else.