People who think that there would be no scientists or "innovation" without capitalism seem to be living in some imaginary world where scientists get paid a lot. People become scientists *despite* capitalism. Capitalism tries to sabotage science at every turn.
For context, I am currently doing a science degree with the intention of becoming a researcher. The biggest thing I am worried about is having to complete a phd while being paid very little, and most likely even once I finish my phd, since I live in a capitalist society and will have to use all of that money just to survive. Although I still plan on going into research, if surviving becomes too difficult, I may have to abandon my dream.
I know someone who loves maths and is doing a maths degree, but decided to not go into academia due to obvious capitalist issues such as needing money to survive.
We do not need capitalism for science or art. It is actively suffocating us while pretending to be on our side.