Europe will never be able to achieve self-reliant defense

Whether you look at the current economy or public opinion,
they will absolutely never be able to increase defense spending by diverting funds from other budgets, especially welfare.
The citizens will never accept austerity, and they are very proactive in their actions.
Even if they shout about self-reliant defense and breaking away from the US with just their words,
Trump is telling European countries to increase their budgets by 5% or 10%.
Just looking at France right now, pensions, welfare, and even education budgets are on the verge of collapse; how can they invest more in defense in that situation?;;
In the first place, they are just all talk; they lack the capability and, most crucially, the will to do it, including their citizens.
Trump might be a madman, but he knows all too well that Europe is helpless even when he openly threatens them regarding NATO defense spending.