You just said you just did it for fun and no one pays you for it lol, don't those two comments contradict each other?
If you mean you are a professional as in you work another job, that makes sense, most adults can relate to deadlines, but for some of us writing IS our job, and the work we do in one place represents us in all places, so it is important to represent ourselves well. One of the ways we can do that is through consistency with the works we put out.
I was actually offered a contract by Tapas, but I turned it down to retain more creative control over the story. (nothing wrong with contracts if that's what people want ofc) You may consider it being too worried, but everyone has different opinions. I write professionally, and at the very least, my free stories are a way of getting my name out so people can find my other works that aren't free. There's nothing wrong with people taking the work they do seriously. If you can live without stress about your work, that's great, but it's not true for everyone, so please respect other people's struggles, relating to the matter.