What shows up in your Twitter stream is there by your own choice. I’m a late-comer to Twitter so I don’t have the early experience with it as a startup. I followed a lot of people that I respected for their work as novelists, commentators, and maybe just being a person of renown. Almost all of those follows were cancelled because they went off a deep end on some topic or other, usually political. Now I Google ‘funny Twitter accounts’ and add those to see what might happen. My Twitter stream immediately brightened up. There are people out there just wanting to tell funny jokes, sometimes with cats.