Definitely depends on where you're going. Certain Hexbear posts are such obvious bot networks, while some niche communities can remember what they wrote more than two comments ago.
I have a more realistic description of "Dead Internet Theory" that involves no conspiracy theories:
The Internet is becoming a monoculture, which is killing the vibrant, diverse, resilient, innovative space it used to be. Manifestos about a better way of life, and creative personal websites have been replaced with vapid social status posts in bland bootstrap layouts that double as data collection schemes. Technology that empowers people has been replaced with technology to restrict people. Bots masquerading as people is just the cherry on the sundae, the inevitable outcome of having created such a monoculture, a place where large orchards of content are so easy to pollute. The modern Internet ducking sucks, it has been ruined by people.
I saw a movie where bots had a kind of food & drink bag inside their belly to correct whatever they put in their mouth so they could emulate biologicals.