Sure, but the viral meme aspect is because HK was such a well received game and Silksong has been so highly anticipated for so long, not the other way around. It certainly contributes to the hype today, but memes are not the reason for the initial success of Hollow Knight and the anticipation of Silksong. The memes really took off around 2021-2022 after Silksong had been in development for several years with no release in sight and people started wondering how long of a wait they were in for.