Yes, the COVID vaccines were developed quickly.
This basically boils down to it not being The Year of our Lord 1796.
Let me explain: We didn't have to "figure out" how vaccines work in 2019. Also, scientists in the 1800s didn't have access to super-compute clusters deconstructing protein models. I will admit that my layman explanation sounds far-fetched to the Luddite crowd clutching their equally-incomprehensible space-comm microcomputers, yet time and again I see the argument, "They were developed too quickly" and I realized they don't understand that's how linear time actually works.