What's sensible about it? The causes of inflation are not solved by raising wages so doing so at this juncture is just an example of a dog chasing it's tail. If anything, it risks making the situation worse.
All the while, strikes also cost the economy in terms of growth and undermine the very industries that employ them. How many potential customers are now using alternatives to Royal Mail and the rail network for example?
There was a global pandemic and post pandemic demand coupled with a war between Europes two largest nations has driven inflation across all of Europe. Thinking that giving everyone a 10% payrise will fix it isn't a sensible solution to the problem, unfortunately.