As far as I've ever been aware, socialism is the use of tax dollars to provide goods or services

I've seen others comment but I'll add my own two cents. You don't know what socialism is, and that's not a criticism of you, it's just a fact.

What you're describing is social democracy wherein governments allow a capitalist relationship to the means of production to exist while providing social programs and investing. Socialism and Capitalism are about the worker's relationship to the means of production. Under capitalism Capitalists take money generated by worker's surplus labor as profits and use these profits to create a government that will protect their power to continue stealing from their workers. Under socialism profits are not held privately but publicly, by worker's or socialist governments that exist to redistribute the ill gotten wealth of the Capitalists.

It's not about how many programs a government does or the taxes it collects, it's about the workers relations to the means of production. The problem with social democracy, which Lenin pointed out over a hundred years ago in State and Revolution, is that by letting Capitalists exist they will not allow workers to take away their wealth and power democratically, they will use fascism to secure their wealth. Another problem is that these programs cannot exist for long because Capitalists are parasites and will do everything they can to privatize them and milk as much profit out of them as possible, for examples of this look at nearly every government program that exists in Europe and point to me one that works better now than it did 30 years ago before Capitalists had time to take cuts out of it, it's a really big problem typically with healthcare programs in these countries.