Ofcourse not. Take Newton for example. He believed in god and nevertheless explained gravity. However he failed to understand that Newtonian gravity can also explain the n-body problem. It was his understanding that god was responsible for holding the planets together, because they could not maintain stable orbits (whereas it's easy for the 2 body problem). However just some years afterwars, some smart mathematician was able to figure out why our planet orbits are stable.

I am paraphrasing from Neil de grasse Tyson: he brought that up during one of his presentations. His point was that although Newton was smart, he attributed something he couldn't understand to god. If Newton wouldn't have attributed it to god, then he might have figured it out himself....

I think it's not unreasonable that a belief in god (or any other strong beliefs) will hold you back on your scientific journey, simply because you wont look beyond that.

tldr: my point never was that you need to be an atheist in order to advance your scientific understanding, but that your belief will probably hold you back (if your belief is connected to the physical world).