What is wrong is your reading comprehension skills. I never said they have to be done in a row. In fact, I think it's more stupid to do 100 push-ups in a row than to do them in several sets.
The problem seems to be on your side and not mine. Can you point me to the post where I said that you said they should be done in a row? You keep saying that doing 100 push-ups a day isn't good or unhealthy or whatever, and you suggested that one should do 100 push-ups in 3 or 4 days in a week, so in response, I asked you what if someone is doing them in different sets in a day instead of taking days off? Which will make it pretty easy for them if they exercise regularly. Now, if you don't have a reading comprehension problem, you should be able to understand what I just said and what I said earlier.
Just push-ups is kinda pointless, there are more muscle groups in your body. Add pull-ups, dips and crunches and you cover the basics of core strength.
Well, I wouldn't call it pointless, but adding more to it can be a plus and it totally depends on an individual's workout routine and how much they can manage. A person should know their body and how it reacts to certain exercises if they have been doing them regularly.
The argument here is not about not adding anything extra but OP is persistent that 100 push-ups a day is stupid which isn't. If you can, you should add more to it, if you can't, don't do it.