I highly recommend everyone read Invisible Women. It's full of interesting anecdotes like you've just identified.
https://carolinecriadoperez.com/book/invisible-women/
Modern smartphones are too big for women's pockets and too big for their average hand size so as a result women are far more likely to drop phones and incur unnecessary expense of replacing them. Our world is simply designed around a male default and apparently we just accept that.
After 13 years of conservative government it's ridiculous to believe there's any more welfare that could be cut without inflicting unnecessary pain.
£5 billion is a tiny proportion of government spending, and this is money that would immediately be re-spent by recipients so it directly contributes to our economy.
The only reason to push ahead with this is to get some headlines and appeal to some of Reform voters who inevitably moan about benefit scroungers.