The value of "historical artefacts" is determined by how many specimens remain, and how sought after they are. For whatever reason.
Aftermarket / modern replacement parts cater to a different market. They don't 'dilute' the historic value of original parts.
There is considerable overlap though. If anything, availability of modern replacements eases demand for original parts. Helping to keep those available for purists, musea, reverse engineering etc (and their prices reasonable). This should make both purists & non-purists happy.
No need in italic font and other passive aggressive stuff. Ask any old hardware enthusiast if they prefer an actual exact silicon level replica of SID or modern fancy shmancy FPGA replacement thing - I guarantee you majority would want the precise replica. Because why people content with these FPGA ugly looking quasi-substitutes, cause there is no actual period-accurate substitutes are available.
In any case a "Commodore 64" made entirely from components invented in 2020s should be called C64 anymore. It is a replica, a decent one, but not the real thing.
Aftermarket / modern replacement parts cater to a different market. They don't 'dilute' the historic value of original parts.
There is considerable overlap though. If anything, availability of modern replacements eases demand for original parts. Helping to keep those available for purists, musea, reverse engineering etc (and their prices reasonable). This should make both purists & non-purists happy.