Now, as far as the quality of startups for startups is concerned, you can always argue whether they are good or bad etc. So you saying that you are sick of sick of startups for startups is probably no different than someone saying "I am just sick of all these Show HN posts" because essentially both are trying to achieve the same thing: get their startups shared with HN community (regardless of quality, purpose, type etc.)
Now, as far as the quality of startups for startups is concerned, you can always argue whether they are good or bad etc. So you saying that you are sick of sick of startups for startups is probably no different than someone saying "I am just sick of all these Show HN posts" because essentially both are trying to achieve the same thing: get their startups shared with HN community (regardless of quality, purpose, type etc.)