..... that some git on Mumsnet is implying that the vaccine doesn't work because Capt.Tom has been vaccinated but still got infected.


Be careful, Steve, that you you don't fall in to the trap yourself, of reading what you want to read rather than what is actually written. A poster here repeated a piece of misinformation, taken from Mumsnet, that Capt. Sir Tom had been vaccinated. The conclusion that

"..... that one can still contract the virus after having the jab"

May have come from Mumsnet but, equally, may have Senoufou's own opinion.

Wherever that conclusion came from, it doesn't necessarily follow that it is implying that the vaccine doesn't work. It may have been expressing a note of caution that, since none of the vaccines claim to be 100% effective, vaccination does not make us invincible and that mask/distance/hygiene precautions should still be followed.