How did Synthwave end-up associated with Cyberpunk ?

If you look on "cyberpunk" play-list on youtube, it's mostly some synthwave electronic music.

if I think about Cyberpunk, I obviously think about 2020's rockerboys with a guitar-axe, or skater like snow crash's YT. Also, as it's name stands it's a deeply punk anti-capitalist. I feel like RATM or noFX would be way more suited in that genre than some DJ playing with synth.

So how did we switched from guitar to synth, and from anti-capitalism to neon aesthetic ?