The problem is that if a country treats money as unlimited and without a cost then inflation will mirror that and people in that country will lose their savings, their job will not pay for their bills anymore and so on
It's not as simple as "just spend more"...
The Venn diagram of "people that like Elon musk and want to support him with their money" and "people that consider buying an electric car for environmental reasons" is having very little overlap in recent years