I would say that you should take it as a compliment, that someone think's you would need more time to create, what you have created. I definetly agree, that creating a game like this would take longer and I also kinda accuse you of cheating. But if you created all that in one day(which only you know) I would be impressed and clap for you.
I have no reason to lie, nothing to gain from it. I only want people to enjoy the game. I agree I could have spent more time on it, but I didnt.
Im not sure how I can prove I made this in a day, but in the absence of evidence that I cheated maybe you should give me the benefit of the doubt?
I guess it is nice people are impressed, but you guys have horrible attitudes to new devs. Why would anyone want to start out when everyone accuses them of cheating? This jam is literally nothing but an exercise to make games, if you cheat you are only cheating yourself the practice.