Not a parent myself but on the topic of children and dreams. As mentioned before, it does depend on the child's age, what it is and what their skill on it is or likely could become.
I wouldn't advise crushing a child's dream at all but if they're a lot older and it doesn't look like it would work, then a gentle honest conversation about it, with some other ideas and directions, probably would be the right move. But I can't say for certain, so...
About feedback. I'm not really fully sure myself but can try to share what I think sounds good. When you work really hard on something and put it out there, you have to be aware that people may like it or may not. On top of this, we have subjective opinions. Sure, if a lot of people are saying the same thing, then it's likely something could be improved there.
But yeah, while a lot of negative feedback can easily really feel discouraging at the time, I don't advise deciding whether you continue your hobby or not based on it. (Or fear it for any other reason). I think feedback is really useful for improving but if you can only take bits at a time, then that's fine.
Some people will probably give an honest opinion of their view of your game but that shouldn't decide if you make another game or not. (Or fear feedback for other reasons. Or keep fearing feedback for any reason). I wouldn't really fear it but that could be natural.
And that's assuming people will give negative feedback or only negative feedback. I think practice and experience make your skills better. Most first RPG Maker games, if you put them out there, are likely going to have at least some negative constructive criticism. But there probably is something positive there too, about the game, already. Hopefully. If not, skill makes games better so just continue your hobby, as long as you enjoy it.
It's good to take the advice given but just work at it at your own pace.
Positive feedback is really nice as well, but I'd say do the game you want to do.
But yeah, as mentioned earlier in the discussion, there are people out there who might say negative nonsense to you or just be a bit mean, etc. My advice, on comments like those, is to try to judge if there is anything useful in the comment and ignore the rest.
But don't assume all negative comments are trying to put you down because they might just be explaining their experience with the game or trying to help you improve.
Lastly, you don't have to make changes to the game or future games based on the feedback. If you feel it's overwhelming or too much, that's okay. I mean I would still try to improve something and see how much you can try to improve, but as a hobby, I'd advise you to keep enjoying your hobby no matter what. If you want to put your games out there, good or bad, you are allowed to. But some players will play and give an opinion based on their experience. So you have to be aware that yes that will happen but you can keep enjoying your hobby and putting games out there, regardless of what you do next. Ignoring feedback outright though, I don't advise.
Games having a lot of negative experiences in them isn't fun to play, so to balance out what I said, I'd still try to improve some things each time and see if you can do maybe more after that. But it really is up to you what you do, etc.
I would find it annoying if I gave constructive feedback and the person didn't care at all and just continued doing it. More so if a lot of people gave the same suggestions. I guess it would depend on what it is. I mean if you're maps are always large and empty I'd try improving that. If your battles are always spamming the same skills, I'll try improving that. I wouldn't advise or force it for your first game or maybe even a second game, but I'd try to work on it a little bit at a time.
I don't know everything about this subjective though, like I said I'm not fully sure, but I hope that still helps a little or a lot!
Edit: The vagueness is why, I think, it can be like a rabbit hole. As it's harder to pinpoint one thing. I.e. What type of fear? Why do you fear? Is this your first game? Where do you plan to share it? Are we talking about people being honest? Mean? Vague in their responses? Etc. But I don't think it matters here, as it's still an interesting discussion.