I wasn't intentionally posting bad advice

This time it wasn't technically advice; but, by where and how you posted, you strongly implied that it was good code for others to use (ie, because it's in Cool Uses for Perl, you thought it was "cool" and thus usable by others). And, as you have admitted before, you do give bad advice (or, as you call it, "stupid stuff") intentionally: you said so here, after being called out for answering a question with bad advice, using the justifictaion, "My theory is that asking questions is not as effective as posting stupid stuff. When you post something incorrect, it irritates people who are knowledgeable, and they respond to you faster and with more specific and pointed answers". That is intentionally giving bad advice, and you know it. That is trolling.

So, if I am not allowed to share my code to see if anyone has a better solution, then where do I post?

By being in Cool Uses for Perl, it implies you thought it was good code, that you thought would be cool for others. But you didn't ask any question in your original post (the only question marks in your original post were in the code block), and you in no way indicated that you were looking for feedback or critique.

If you are looking for the wisdom of other monks, you should post in Seekers of Perl Wisdom, and you should preface your post with something like, "I am trying to figure out binary/decimal conversion on big numbers without using bigint or similar libraries, as a learning exercise. Here are the ways I came up with. Could you please review the code, and make suggestions for improvements?"

Lol I don't know how else to ask.

But you didn't "ask", despite your sentence I just quoted. If you want someone to review your code and give good advice, then ask them to review your code and give you advice. Don't post the code in the wrong section, hoping that they will be "irritated" into giving you advice, anyway.

I thought this website is meant for communication

Good communication would have included admitting, in the first post, that you were sharing code you weren't sure about, that it was an intellectual exercise, and that you wanted advice. Good communication requires being honest with your goals. In this conversation, and those I have linked, you have not been honest about your goals until people call you out on it. If you start out with honesty, you will get much better results.

apparently everything I say irritates someone

Your publically-stated goal is to irritate us into given answers that contradict you, and then you complain that we're irritated. Does this make sense to you? Because it doesn't to me.

At this point, I've had my say, and I'll go back to trying my best to ignore you. If you're lucky, other monks won't be annoyed by your trolling as I am, and they might still be willing to spend their time interacting with you.

(update: and just so that you know I don't have a vendetta against you: I intentionally upvoted Re^4: converting binary to decimal, because in it you were obviously trying to learn from the advice given, and trying to edit the code given to understand it better, and then asked a real question, without trying to provoke us with "stupid stuff". If you posted more like that, and fewer posts like Re^4: converting binary to decimal, you wouldn't get any downvotes from me, and would probably earn more upvotes from me.)

If I ask ChatGPT, it just gives me the same useless answers over and over again.

Useless you say? Well, that's interesting because recently you said

I've talked with ChatGPT trying to get it to give me an alternative unique sub that converts binary to decimal, but it kept referring me to the bigint module.

Your advice received from ChatGPT on that occasion was, far from being useless, absolutely the correct answer (and I'm pretty much never going to defend that stochastic parrot ever again). I have no idea what objection you could possibly have to what is demonstrably the right answer so you are on your own on that one. It's the same answer that any given monk would give you.

I want some input from human intelligence, not AI. That's why I am posting here.

Great. So ask for it. Don't post in CUFP and expect anyone to think that what you have posted isn't supposed to be useful code. Post in the right place. Ask sensible questions. In short: read the room.

If your code runs and produces the correct answer, it does not qualify for the phrase "something bad". It's at least one or more levels above that!