No. Trump isn't that strategic and his treatment of Europe isn't effected at all by how much Europe does or doesn't spend on defence. Remember that him sending that piece of vermin Vance to shout about how much he hates us, and his desire to steal Greenland only happened after most of Europe met that NATO norm that was allegedly so important.
I think there are also some practical misconceptions you operate under. Firstly that the US is already free to post as much forces as they want in Greenland, and Denmark has stressed they're fine with Trump increasing US presence there as much as he wants. There's little to suggest there are any barriers preventing Denmark and the US from ''protecting Greenland''. Beside Trump is busy colluding with the very enemy he claims he wants to protect Greenland from.
The idea that welfare cripples nations and we should just subject populations to the barbaric system of the US where the population stands completely alone is simply wrong. In fact Trump's presence in politics shows just how risky it is to have a system that makes a population so misserable. It creates instablity, and leads to preventable death of tax payers. Furthermore having some inept demagogue in charge would do far much to cripple Canada, while said inept demagogue likely being a puppet to Trump as well.
I generally think that up to a certain point, welfare systems face diminishing returns on national wellbeing, and I say that as someone who needs it more than most. It's because you have to fund things like an overextensive healthcare system. We both know about the US, but in China, in my hometown, which is a small city, you can go to a hospital, but if you need long-term care, you need to essentially pay a staff member under the table to have a better quality of life there. And in Guangzhou, the city nearby, which may or may not have that, there is a long waiting period for appointments. And when China does this, they can spend more on R&D, infrastructure, and take more risks on national investments that pay out in the future. Do I think the US and Chinese healthcare systems need to be more inclusive and generous? Yes, to a certain point. And I got lucky, I live in Columbus, Ohio, which hits above its weight in healthcare, meaning we have more healthcare compared to other cities, even in the US, for our size, so I understand how essential it is, but there are opportunities and costs to everything.