To which point?
Why doesn’t Ireland have more? Smaller population, different priorities, not a member of NATO etc
Why does the UK need those capabilities ?
IMHO the UK wants to be a globe player
The UK has a long history of enduring ops and larger intervention ops
Of course maybe the UK wants out of that business. But can you guarantee once the capacity is lost that a future UK Government will use the remaining capabilities as if they had those previously available, and it will be troops and their families who pay the price.