I"m not getting involved in the debate, except to say that the design
of the TOS bridge does not scream "1960s" to me, with the exceptions of the "Burke chairs" and the control panels, given the current trend toward touchscreens, "glass cockpits" and the like.
The remaining TOS sets scream not so much "1960s" as "1960s TV show," given their plainness. I love
the use of colored lighting in the sets, but the plain, light gray walls of virtually every set except the bridge just look cheap today. The sparseness of the engine room's control panels along the side wall is particularly indicative of a show that didn't have a lot of money to throw around.
TOS is my favorite Trek TV series, but it, like its successors, is very much a product of its time.