It actually makes sense because during the covid crisis, there's been huge issues with student poverty (post high school). So giving out 300€ for 18 years old to buy video games when 1 year older students struggle hard to make ends meet is not taken well by some.
A 1 time 300 bucks given to all the students with a scholarship would be way more appreciated than 300 bucks given to all the 18 years old without distinction.