All you have done on the thread is giggling like a child so that comes as no surprise really. Rather than address salient points relating to the mutation of covid ( which is a topic well beyond your juvenile mind) you find terminology relating to whether a scientist can be struck off or not funny as you hehehe. If a scientist works for a government department as role as health minister, you're saying he can't be fired which to me is "struck off". It's a phrase , try not to let it consume your tiny brain as you continually troll the thread... have you no views on covid mutation yourself or do you not know what the word mutation means?
I nearly gave a list of examples of professions you can be struck off from but I thought that would be rather pedantic and an insult to @SallyBasingstoke's intelligence. I assumed she understood what it meant or would at least google it in response to my post... rather than desperately trying to find a scientist who had been struck off 
Being struck off isn't the same as being fired. There are some professions, eg doctor, nurse, lawyer, social worker, where there is such potential for abuse of power/trust and the consequences of mistakes are so bad that you need to be registered with a governing body for the profession. Being struck off the register is more than being fired from your job, it is a ban from working in that profession.
The two examples you gave were biomedical scientists working in NHS hospitals in roles that require them to be registered with the Health and Care Professions Council. "Scientists" can't be struck off, however, some scientists have jobs that require professional registration and could be struck off. In theory, they can still work as a scientist in a role that doesn't require registration.
If a scientist works for a government department as role as health minister, you're saying he can't be fired which to me is "struck off"
Health ministers aren't usually scientists, they are politicians. Members of SAGE could be fired. Some of them could be struck off for professional misconduct as they are also medical doctors but it would depend on what they had done, certainly not for supporting a zero COVID strategy. You could probably be struck off for breaking lockdown to meet your mistress but Professor Neil Ferguson isn't a medical doctor or any other registered professional.
More importantly, it is normal and good for scientists to disagree and challenge each other. Science is rarely black and white. You might like to read this:
www.researchgate.net/profile/James-Shanteau/publication/262915496_Why_Do_Experts_Disagree/links/0c9605393b8c6c2f35000000/Why-Do-Experts-Disagree.pdf
To answer the question, "Does virus mutation change your feelings about how you'd like things to be handled?" I change my mind frequently as new information/data comes to light, as I am sure do the scientists advising the government, that's how science works.