[timjahn]

It doesn't matter.

Focus on validating the problem first. Get people to pay you to solve that problem and once you have people begging you for the solution, then figure out something to build.

I've seen (and experienced myself) this mistake too many times. The tech stack does not matter AT ALL.

All that matters is that you're solving a problem for the people that will pay you. Don't spend 3 months perfecting the ideal tech stack and then realizing you have nothing to use it for.