We are weak if in a constant state of fear.
This is a great great point by @Theothersideofthefence its exactly how they got us to bend during COVID, and given everything the government did whilst we were all sticking to the their rules, I'd say they have used up their grace with the British public now, and conscription won't work, too many people will say no!
It's also worth noting, that it's takes a long time and a lot of training, before the military send anyone out on active deployment, particularly to a hostile warzone.
The UK military doesn't need anyone else, because whilst we don't have the biggest army in the world, if we do go to war, we will be fighting Russia as part of a NATO, so will be making up part of a much bigger army.
I think what has happened is someone has made a comment as part of a larger discussion, which the media has run with and has been blown out of all proportion, please try not and worry OP, it's so unlikely it's almost impossible, I was terrified when I first saw it, and then I talked it out with my dad, who is the world's most practical and level headed man ever, and I felt much better.