音が大きい方が、がしがし仕事してるように見えるという人と、うるさいだけって言う人いますよね。

、、。

There are people who say louder sounds make you look like you're working harder, and people who just say it's noisy, right?

Literal

Sound [subject-が] loud side [subject-が], vigorously working-[appearance-ように] looks [called-という] person [and-と], noisy only [quotative-って] say person exist [agreement-よね].

がしがし is a mimetic for vigorous, aggressive action — banging away at a keyboard, working with force. The sentence juxtaposes two views of workplace noise: productive (がしがし仕事してる) vs. merely noisy (うるさいだけ). よね at the end seeks agreement, turning the observation into shared social commentary.