These types of deep state conspiracy theories have been swirling around for years. I'm not at all sure there are proportionally more people involved in them than there used to be, and I haven't seen any statistics to say otherwise. It has eased communication, and possibly made actual action more attainable, but dog-whistling or even blatantly racist conspiracy theorists had proponents long before the internet. The same with anti-feminism, anti-globalism, anti-Semitic (often combined with anti-socialism in Cultural Marxism and Jewish Bolshevism), etc.
Personally, I think that for all the damage the internet has done in this regard, it has also opened up an avenue for people to become more informed.