They need to try keeping up.
"Darwin's Theory of Evolution" is as obsolete as "Newton's theory of Gravity".
Today science has moved on to much more precise theorums, Punctuated Equilibrium Evolution and General Relativity.
So9
That's not a bad analogy. Newton's equations are still quite adequate for NASA to launch satellites and steer probes to other planets. The algorithms for computing transfer orbits do not need to factor in relativity.
But at the fine level, relativity provides more precision, especially when dealing with extremes of velocity or gravity.
In a similar way, Darwin's primary hypothesis of variation and selection is still completely valid, but has been refined over the decades, and further refined by molecular biology.
Next your going to tell me that Ether and Phlogiston are no longer part of cutting edge theory.