It's pretty simple, if you want to start from scratch all you need is:

• To intricately understand the mathematics of quantum entanglement and Einstein-Rosen Bridges
• Have the world's most powerful quantum computer
• Use machine learning to determine simulation parameters simplistic enough for the quantum computer to simulate while still maintaining accuracy to the mathematics of a full simulation

The speed of light is essentially a mathematically calculated cosmic speed limit, the fastest anything can go without huge swaths of our mathematical understanding of the universe being wrong, including quite a lot that we're pretty damn certain is correct.

Wormholes are not truly examples of FTL speed, they're more like shortcuts through space time. Essentially taking a shorter path between two positions, allowing you to arrive at your destination much faster than you could have if you traveled through space at the speed of light.

My layman's perspective is that yes, scientists do seem to be a little too married to their current understandings of what is and isn't possible, but that's nothing new. The world's smartest people throughout history have tended to draw a line in the sand and say that they are certain of what they know, only for the next generation of scientists to confirm that they didnt get everything right. It's equally important to acknowledge, however, that without understanding the math of fundamental physics (which I definitely do not) we can't truly understand what scientists actually do and don't know, we can only understand very generalized conceptualizations of it because the math simply does not have a complete english translation. There's information that's lost when trying to express the most complex mathematics in just words that precludes us from really understanding why things like the speed of light seem so absolute.