CoD culture started after css release with MW1 and MW2, maybe players by the reverted back to cs 1.6 .
Always seen css as a stepping stone and never really got to enjoy it, as by the time I upped my PC - we started to play 1.6 again. And I can lot say I enjoyed 30-60 fps I started css with when in came out.
Csgo was the result of css trial and error, while cs2 has much more inheritance and shoes to fill, also I do not remember cs back in 1.5-css days have much competition, basically everyone I knew played these games, however, now there is Valorant. Further on the marked we have Cod and Pubg. Even rainbow siege tried to somewhat compete, but... It fell flat.